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64044955 = 513985307
BaseRepresentation
bin1111010001001…
…1111110011011
311110111211011101
43310103332123
5112343414310
610204412231
71405241662
oct364237633
9143454141
1064044955
1133173a17
1219547077
1310365130
148711dd9
15595143a
hex3d13f9b

64044955 has 8 divisors (see below), whose sum is σ = 82765872. Its totient is φ = 47294688.

The previous prime is 64044941. The next prime is 64044979. The reversal of 64044955 is 55944046.

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 64044955 - 25 = 64044923 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492589 + ... + 492718.

It is an arithmetic number, because the mean of its divisors is an integer number (10345734).

Almost surely, 264044955 is an apocalyptic number.

64044955 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64044955 is a deficient number, since it is larger than the sum of its proper divisors (18720917).

64044955 is a wasteful number, since it uses less digits than its factorization.

64044955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985325.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 64044955 is about 8002.8091942767. The cubic root of 64044955 is about 400.0936343298.

The spelling of 64044955 in words is "sixty-four million, forty-four thousand, nine hundred fifty-five".

Divisors: 1 5 13 65 985307 4926535 12808991 64044955