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64008811 = 431488577
BaseRepresentation
bin1111010000101…
…1001001101011
311110102222120201
43310023021223
5112341240221
610203533031
71405031416
oct364131153
9143388521
1064008811
1133149849
121952a177
1310351849
148702b7d
155945891
hex3d0b26b

64008811 has 4 divisors (see below), whose sum is σ = 65497432. Its totient is φ = 62520192.

The previous prime is 64008803. The next prime is 64008817. The reversal of 64008811 is 11880046.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64008811 - 23 = 64008803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64008811.

It is not an unprimeable number, because it can be changed into a prime (64008817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744246 + ... + 744331.

It is an arithmetic number, because the mean of its divisors is an integer number (16374358).

Almost surely, 264008811 is an apocalyptic number.

64008811 is a deficient number, since it is larger than the sum of its proper divisors (1488621).

64008811 is a wasteful number, since it uses less digits than its factorization.

64008811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488620.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 64008811 is about 8000.5506685478. The cubic root of 64008811 is about 400.0183554077.

Adding to 64008811 its reverse (11880046), we get a palindrome (75888857).

The spelling of 64008811 in words is "sixty-four million, eight thousand, eight hundred eleven".

Divisors: 1 43 1488577 64008811