74660989 has 12 divisors (see below), whose sum is σ = 83459712. Its totient is φ = 66690000.

The previous prime is 74660977. The next prime is 74661007. The reversal of 74660989 is 98906647.

It is a de Polignac number, because none of the positive numbers 2^k-74660989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74660909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1887 + ... + 12364.

It is an arithmetic number, because the mean of its divisors is an integer number (6954976).

Almost surely, 2^74660989 is an apocalyptic number.

It is an amenable number.

74660989 is a deficient number, since it is larger than the sum of its proper divisors (8798723).

74660989 is a wasteful number, since it uses less digits than its factorization.

74660989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14308 (or 14295 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 74660989 is about 8640.6590605115. The cubic root of 74660989 is about 421.0799663041.

The spelling of 74660989 in words is "seventy-four million, six hundred sixty thousand, nine hundred eighty-nine".