64857156 has 48 divisors (see below), whose sum is σ = 186259584. Its totient is φ = 17104896.

The previous prime is 64857119. The next prime is 64857161. The reversal of 64857156 is 65175846.

64857156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28605 + ... + 30788.

It is an arithmetic number, because the mean of its divisors is an integer number (3880408).

Almost surely, 2^64857156 is an apocalyptic number.

It is an amenable number.

64857156 is an abundant number, since it is smaller than the sum of its proper divisors (121402428).

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

64857156 is a wasteful number, since it uses less digits than its factorization.

64857156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59420 (or 59418 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 64857156 is about 8053.3940670999. The cubic root of 64857156 is about 401.7778282767. Note that the first 3 decimals are identical.

The spelling of 64857156 in words is "sixty-four million, eight hundred fifty-seven thousand, one hundred fifty-six".