68621364 has 72 divisors (see below), whose sum is σ = 206969280. Its totient is φ = 19604592.

The previous prime is 68621327. The next prime is 68621393. The reversal of 68621364 is 46312686.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 1192 + ... + 11775.

Almost surely, 2^68621364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68621364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103484640).

68621364 is an abundant number, since it is smaller than the sum of its proper divisors (138347916).

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

68621364 is a wasteful number, since it uses less digits than its factorization.

68621364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12994 (or 12979 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 68621364 is about 8283.8013013350. The cubic root of 68621364 is about 409.4049746636.

The spelling of 68621364 in words is "sixty-eight million, six hundred twenty-one thousand, three hundred sixty-four".