64156545 has 24 divisors (see below), whose sum is σ = 116041536. Its totient is φ = 32728608.

The previous prime is 64156517. The next prime is 64156571. The reversal of 64156545 is 54565146.

64156545 is a `hidden beast` number, since 64 + 1 + 56 + 545 = 666.

It is not a de Polignac number, because 64156545 - 2⁸ = 64156289 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29959 + ... + 32028.

It is an arithmetic number, because the mean of its divisors is an integer number (4835064).

Almost surely, 2^64156545 is an apocalyptic number.

It is an amenable number.

64156545 is a deficient number, since it is larger than the sum of its proper divisors (51884991).

64156545 is a wasteful number, since it uses less digits than its factorization.

64156545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62021 (or 62018 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 64156545 is about 8009.7780868136. The cubic root of 64156545 is about 400.3258698666.

The spelling of 64156545 in words is "sixty-four million, one hundred fifty-six thousand, five hundred forty-five".