74666685 has 16 divisors (see below), whose sum is σ = 119687616. Its totient is φ = 39748608.

The previous prime is 74666681. The next prime is 74666701. The reversal of 74666685 is 58666647.

It is not a de Polignac number, because 74666685 - 2² = 74666681 is a prime.

It is a super-2 number, since 2×74666685² = 11150227697778450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74666681) 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, 4342 + ... + 12968.

It is an arithmetic number, because the mean of its divisors is an integer number (7480476).

Almost surely, 2^74666685 is an apocalyptic number.

It is an amenable number.

74666685 is a deficient number, since it is larger than the sum of its proper divisors (45020931).

74666685 is a wasteful number, since it uses less digits than its factorization.

74666685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9212.

The product of its digits is 1451520, while the sum is 48.

The square root of 74666685 is about 8640.9886587126. The cubic root of 74666685 is about 421.0906743080.

The spelling of 74666685 in words is "seventy-four million, six hundred sixty-six thousand, six hundred eighty-five".