74090864 has 20 divisors (see below), whose sum is σ = 143888856. Its totient is φ = 36958272.

The previous prime is 74090857. The next prime is 74090867. The reversal of 74090864 is 46809047.

It is a happy number.

It is a super-2 number, since 2×74090864² = 10978912256532992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74090867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1862 + ... + 12314.

Almost surely, 2^74090864 is an apocalyptic number.

It is an amenable number.

74090864 is a deficient number, since it is larger than the sum of its proper divisors (69797992).

74090864 is a wasteful number, since it uses less digits than its factorization.

74090864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10904 (or 10898 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 74090864 is about 8607.6050095250. The cubic root of 74090864 is about 420.0054118728.

The spelling of 74090864 in words is "seventy-four million, ninety thousand, eight hundred sixty-four".