64157836 has 12 divisors (see below), whose sum is σ = 113307040. Its totient is φ = 31784400.

The previous prime is 64157827. The next prime is 64157843. The reversal of 64157836 is 63875146.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73140 + ... + 74011.

Almost surely, 2^64157836 is an apocalyptic number.

It is an amenable number.

64157836 is a deficient number, since it is larger than the sum of its proper divisors (49149204).

64157836 is a wasteful number, since it uses less digits than its factorization.

64157836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147264 (or 147262 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 64157836 is about 8009.8586754075. The cubic root of 64157836 is about 400.3285550550.

The spelling of 64157836 in words is "sixty-four million, one hundred fifty-seven thousand, eight hundred thirty-six".