74557990 has 16 divisors (see below), whose sum is σ = 144528048. Its totient is φ = 27529056.

The previous prime is 74557963. The next prime is 74558009. The reversal of 74557990 is 9975547.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 74557990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286632 + ... + 286891.

It is an arithmetic number, because the mean of its divisors is an integer number (9033003).

Almost surely, 2^74557990 is an apocalyptic number.

74557990 is a deficient number, since it is larger than the sum of its proper divisors (69970058).

74557990 is a wasteful number, since it uses less digits than its factorization.

74557990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573543.

The product of its (nonzero) digits is 396900, while the sum is 46.

The square root of 74557990 is about 8634.6968678698. The cubic root of 74557990 is about 420.8862427568.

The spelling of 74557990 in words is "seventy-four million, five hundred fifty-seven thousand, nine hundred ninety".