68637020 has 12 divisors (see below), whose sum is σ = 144137784. Its totient is φ = 27454800.

The previous prime is 68636977. The next prime is 68637029. The reversal of 68637020 is 2073686.

It is a super-2 number, since 2×68637020² = 9422081028960800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68637029) 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, 1715906 + ... + 1715945.

It is an arithmetic number, because the mean of its divisors is an integer number (12011482).

Almost surely, 2^68637020 is an apocalyptic number.

It is an amenable number.

68637020 is an abundant number, since it is smaller than the sum of its proper divisors (75500764).

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

68637020 is a wasteful number, since it uses less digits than its factorization.

68637020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431860 (or 3431858 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 68637020 is about 8284.7462242364. The cubic root of 68637020 is about 409.4361076155.

The spelling of 68637020 in words is "sixty-eight million, six hundred thirty-seven thousand, twenty".