74861568 has 66 divisors (see below), whose sum is σ = 216187764. Its totient is φ = 24950784.

The previous prime is 74861537. The next prime is 74861609. The reversal of 74861568 is 86516847.

It is a happy number.

74861568 is a `hidden beast` number, since 7 + 4 + 86 + 1 + 568 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5155 + ... + 13277.

Almost surely, 2^74861568 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 74861568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108093882).

74861568 is an abundant number, since it is smaller than the sum of its proper divisors (141326196).

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

74861568 is a wasteful number, since it uses less digits than its factorization.

74861568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8149 (or 8128 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 74861568 is about 8652.2579711888. The cubic root of 74861568 is about 421.4567104725.

The spelling of 74861568 in words is "seventy-four million, eight hundred sixty-one thousand, five hundred sixty-eight".