74660906 has 16 divisors (see below), whose sum is σ = 122669640. Its totient is φ = 33922560.

The previous prime is 74660903. The next prime is 74660909. The reversal of 74660906 is 60906647.

It is an interprime number because it is at equal distance from previous prime (74660903) and next prime (74660909).

It can be written as a sum of positive squares in 4 ways, for example, as 51051025 + 23609881 = 7145^2 + 4859^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 74660906.

It is not an unprimeable number, because it can be changed into a prime (74660903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36875 + ... + 38846.

Almost surely, 2^74660906 is an apocalyptic number.

74660906 is a deficient number, since it is larger than the sum of its proper divisors (48008734).

74660906 is a wasteful number, since it uses less digits than its factorization.

74660906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75769.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 74660906 is about 8640.6542576358. The cubic root of 74660906 is about 421.0798102670.

The spelling of 74660906 in words is "seventy-four million, six hundred sixty thousand, nine hundred six".