68657156 has 12 divisors (see below), whose sum is σ = 120242892. Its totient is φ = 34302048.

The previous prime is 68657137. The next prime is 68657159. The reversal of 68657156 is 65175686.

It can be written as a sum of positive squares in 2 ways, for example, as 51351556 + 17305600 = 7166^2 + 4160^2 .

It is not an unprimeable number, because it can be changed into a prime (68657159) 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, 95 + ... + 11718.

It is an arithmetic number, because the mean of its divisors is an integer number (10020241).

Almost surely, 2^68657156 is an apocalyptic number.

It is an amenable number.

68657156 is a deficient number, since it is larger than the sum of its proper divisors (51585736).

68657156 is a wasteful number, since it uses less digits than its factorization.

68657156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13270 (or 13268 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The square root of 68657156 is about 8285.9613805520. The cubic root of 68657156 is about 409.4761423732.

The spelling of 68657156 in words is "sixty-eight million, six hundred fifty-seven thousand, one hundred fifty-six".