64656345 has 32 divisors (see below), whose sum is σ = 111936384. Its totient is φ = 31680000.

The previous prime is 64656337. The next prime is 64656377. The reversal of 64656345 is 54365646.

It is not a de Polignac number, because 64656345 - 2³ = 64656337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48285 + ... + 49605.

It is an arithmetic number, because the mean of its divisors is an integer number (3498012).

Almost surely, 2^64656345 is an apocalyptic number.

64656345 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64656345 is a deficient number, since it is larger than the sum of its proper divisors (47280039).

64656345 is a wasteful number, since it uses less digits than its factorization.

64656345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593.

The product of its digits is 259200, while the sum is 39.

The square root of 64656345 is about 8040.9169253264. The cubic root of 64656345 is about 401.3627375106.

The spelling of 64656345 in words is "sixty-four million, six hundred fifty-six thousand, three hundred forty-five".