68390592 has 112 divisors (see below), whose sum is σ = 200143872. Its totient is φ = 20500480.

The previous prime is 68390591. The next prime is 68390599. The reversal of 68390592 is 29509386.

It is a super-2 number, since 2×68390592² = 9354546148220928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68390591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74617 + ... + 75527.

Almost surely, 2^68390592 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 68390592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100071936).

68390592 is an abundant number, since it is smaller than the sum of its proper divisors (131753280).

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

68390592 is a wasteful number, since it uses less digits than its factorization.

68390592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 68390592 is about 8269.8604583149. The cubic root of 68390592 is about 408.9455195316.

The spelling of 68390592 in words is "sixty-eight million, three hundred ninety thousand, five hundred ninety-two".