64413657 has 32 divisors (see below), whose sum is σ = 118978560. Its totient is φ = 33460560.

The previous prime is 64413581. The next prime is 64413673. The reversal of 64413657 is 75631446.

It is a happy number.

64413657 is a `hidden beast` number, since 644 + 1 + 3 + 6 + 5 + 7 = 666.

It is not a de Polignac number, because 64413657 - 2¹² = 64409561 is a prime.

It is a super-2 number, since 2×64413657² = 8298238416227298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64414657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13413 + ... + 17570.

It is an arithmetic number, because the mean of its divisors is an integer number (3718080).

Almost surely, 2^64413657 is an apocalyptic number.

It is an amenable number.

64413657 is a deficient number, since it is larger than the sum of its proper divisors (54564903).

64413657 is a wasteful number, since it uses less digits than its factorization.

64413657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31010 (or 31004 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 64413657 is about 8025.8119215441. The cubic root of 64413657 is about 400.8599353697.

The spelling of 64413657 in words is "sixty-four million, four hundred thirteen thousand, six hundred fifty-seven".