74720568 has 32 divisors (see below), whose sum is σ = 201171600. Its totient is φ = 22990848.

The previous prime is 74720563. The next prime is 74720579. The reversal of 74720568 is 86502747.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74720563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119433 + ... + 120056.

Almost surely, 2^74720568 is an apocalyptic number.

74720568 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

74720568 is an abundant number, since it is smaller than the sum of its proper divisors (126451032).

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

74720568 is a wasteful number, since it uses less digits than its factorization.

74720568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239511 (or 239507 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 74720568 is about 8644.1059688090. The cubic root of 74720568 is about 421.1919429127.

The spelling of 74720568 in words is "seventy-four million, seven hundred twenty thousand, five hundred sixty-eight".