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64885061 = 1391812579
BaseRepresentation
bin1111011110000…
…1000101000101
311112002111120102
43313201011011
5113102310221
610234413445
71415341163
oct367410505
9145074512
1064885061
113369811a
1219891285
131059a637
148890233
155a6a30b
hex3de1145

64885061 has 8 divisors (see below), whose sum is σ = 65738400. Its totient is φ = 64037520.

The previous prime is 64885049. The next prime is 64885063. The reversal of 64885061 is 16058846.

64885061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64885061 - 26 = 64884997 is a prime.

It is a super-2 number, since 2×648850612 = 8420142281947442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64885063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23870 + ... + 26448.

It is an arithmetic number, because the mean of its divisors is an integer number (8217300).

Almost surely, 264885061 is an apocalyptic number.

It is an amenable number.

64885061 is a deficient number, since it is larger than the sum of its proper divisors (853339).

64885061 is a wasteful number, since it uses less digits than its factorization.

64885061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 64885061 is about 8055.1263801383. The cubic root of 64885061 is about 401.8354420823.

The spelling of 64885061 in words is "sixty-four million, eight hundred eighty-five thousand, sixty-one".

Divisors: 1 139 181 2579 25159 358481 466799 64885061