64157616 has 40 divisors (see below), whose sum is σ = 184157360. Its totient is φ = 21385728.

The previous prime is 64157573. The next prime is 64157617. The reversal of 64157616 is 61675146.

64157616 is a `hidden beast` number, since 641 + 5 + 7 + 6 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (64157617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73825 + ... + 74688.

It is an arithmetic number, because the mean of its divisors is an integer number (4603934).

Almost surely, 2^64157616 is an apocalyptic number.

It is an amenable number.

64157616 is an abundant number, since it is smaller than the sum of its proper divisors (119999744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64157616 is a wasteful number, since it uses less digits than its factorization.

64157616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148530 (or 148518 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 64157616 is about 8009.8449423194. The cubic root of 64157616 is about 400.3280974732.

The spelling of 64157616 in words is "sixty-four million, one hundred fifty-seven thousand, six hundred sixteen".