68136900 has 72 divisors (see below), whose sum is σ = 212319744. Its totient is φ = 16771200.

The previous prime is 68136877. The next prime is 68136911. The reversal of 68136900 is 963186.

It is a super-2 number, since 2×68136900² = 9285274283220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4836 + ... + 12635.

Almost surely, 2^68136900 is an apocalyptic number.

68136900 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68136900 is an abundant number, since it is smaller than the sum of its proper divisors (144182844).

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

68136900 is a wasteful number, since it uses less digits than its factorization.

68136900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17501 (or 17494 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 68136900 is about 8254.5078593457. The cubic root of 68136900 is about 408.4392376516.

The spelling of 68136900 in words is "sixty-eight million, one hundred thirty-six thousand, nine hundred".