74685209 has 16 divisors (see below), whose sum is σ = 81008640. Its totient is φ = 68674320.

The previous prime is 74685173. The next prime is 74685211. The reversal of 74685209 is 90258647.

It is not a de Polignac number, because 74685209 - 2¹⁶ = 74619673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74685229) 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, 63194 + ... + 64364.

It is an arithmetic number, because the mean of its divisors is an integer number (5063040).

Almost surely, 2^74685209 is an apocalyptic number.

It is an amenable number.

74685209 is a deficient number, since it is larger than the sum of its proper divisors (6323431).

74685209 is a wasteful number, since it uses less digits than its factorization.

74685209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 74685209 is about 8642.0604603300. The cubic root of 74685209 is about 421.1254941150.

The spelling of 74685209 in words is "seventy-four million, six hundred eighty-five thousand, two hundred nine".