64681156 has 12 divisors (see below), whose sum is σ = 113262268. Its totient is φ = 32320512.

The previous prime is 64681151. The next prime is 64681157. The reversal of 64681156 is 65118646.

It can be written as a sum of positive squares in 2 ways, for example, as 46703556 + 17977600 = 6834^2 + 4240^2 .

It is not an unprimeable number, because it can be changed into a prime (64681151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4060 + ... + 12076.

Almost surely, 2^64681156 is an apocalyptic number.

It is an amenable number.

64681156 is a deficient number, since it is larger than the sum of its proper divisors (48581112).

64681156 is a wasteful number, since it uses less digits than its factorization.

64681156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10038 (or 10036 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 64681156 is about 8042.4595740358. The cubic root of 64681156 is about 401.4140701235.

The spelling of 64681156 in words is "sixty-four million, six hundred eighty-one thousand, one hundred fifty-six".