68658620 has 12 divisors (see below), whose sum is σ = 144183144. Its totient is φ = 27463440.

The previous prime is 68658619. The next prime is 68658649. The reversal of 68658620 is 2685686.

It is a super-2 number, since 2×68658620² = 9428012200608800, which contains 22 as substring.

It is a congruent 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, 1716446 + ... + 1716485.

It is an arithmetic number, because the mean of its divisors is an integer number (12015262).

Almost surely, 2^68658620 is an apocalyptic number.

It is an amenable number.

68658620 is an abundant number, since it is smaller than the sum of its proper divisors (75524524).

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

68658620 is a wasteful number, since it uses less digits than its factorization.

68658620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3432940 (or 3432938 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 68658620 is about 8286.0497222742. The cubic root of 68658620 is about 409.4790528190.

The spelling of 68658620 in words is "sixty-eight million, six hundred fifty-eight thousand, six hundred twenty".