74585009 has 4 divisors (see below), whose sum is σ = 74638704. Its totient is φ = 74531316.

The previous prime is 74584999. The next prime is 74585033. The reversal of 74585009 is 90058547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74585009 - 2⁸ = 74584753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74585209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24707 + ... + 27560.

It is an arithmetic number, because the mean of its divisors is an integer number (18659676).

Almost surely, 2^74585009 is an apocalyptic number.

It is an amenable number.

74585009 is a deficient number, since it is larger than the sum of its proper divisors (53695).

74585009 is a wasteful number, since it uses less digits than its factorization.

74585009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53694.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 74585009 is about 8636.2612859964. The cubic root of 74585009 is about 420.9370781400.

The spelling of 74585009 in words is "seventy-four million, five hundred eighty-five thousand, nine".