74039691 has 16 divisors (see below), whose sum is σ = 112377600. Its totient is φ = 42921120.

The previous prime is 74039677. The next prime is 74039717. The reversal of 74039691 is 19693047.

It is not a de Polignac number, because 74039691 - 2⁹ = 74039179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74039621) 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, 48016 + ... + 49533.

It is an arithmetic number, because the mean of its divisors is an integer number (7023600).

Almost surely, 2^74039691 is an apocalyptic number.

74039691 is a deficient number, since it is larger than the sum of its proper divisors (38337909).

74039691 is a wasteful number, since it uses less digits than its factorization.

74039691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97586.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 74039691 is about 8604.6319502928. The cubic root of 74039691 is about 419.9086933036.

The spelling of 74039691 in words is "seventy-four million, thirty-nine thousand, six hundred ninety-one".