74558985 has 16 divisors (see below), whose sum is σ = 124481664. Its totient is φ = 38035712.

The previous prime is 74558933. The next prime is 74558989. The reversal of 74558985 is 58985547.

It is a cyclic number.

It is not a de Polignac number, because 74558985 - 2¹⁵ = 74526217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74558989) 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, 107712 + ... + 108401.

It is an arithmetic number, because the mean of its divisors is an integer number (7780104).

Almost surely, 2^74558985 is an apocalyptic number.

It is an amenable number.

74558985 is a deficient number, since it is larger than the sum of its proper divisors (49922679).

74558985 is a wasteful number, since it uses less digits than its factorization.

74558985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216144.

The product of its digits is 2016000, while the sum is 51.

The square root of 74558985 is about 8634.7544840603. The cubic root of 74558985 is about 420.8881150352. Note that the first 3 decimals are identical.

The spelling of 74558985 in words is "seventy-four million, five hundred fifty-eight thousand, nine hundred eighty-five".