74475631 has 4 divisors (see below), whose sum is σ = 74510352. Its totient is φ = 74440912.

The previous prime is 74475617. The next prime is 74475647. The reversal of 74475631 is 13657447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13657447 = 19 ⋅718813.

It is a cyclic number.

It is not a de Polignac number, because 74475631 - 2²³ = 66087023 is a prime.

It is a super-2 number, since 2×74475631² = 11093239225696322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74475601) 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 3 ways as a sum of consecutive naturals, for example, 13915 + ... + 18508.

It is an arithmetic number, because the mean of its divisors is an integer number (18627588).

Almost surely, 2^74475631 is an apocalyptic number.

74475631 is a deficient number, since it is larger than the sum of its proper divisors (34721).

74475631 is a wasteful number, since it uses less digits than its factorization.

74475631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34720.

The product of its digits is 70560, while the sum is 37.

The square root of 74475631 is about 8629.9264770912. The cubic root of 74475631 is about 420.7312111210.

The spelling of 74475631 in words is "seventy-four million, four hundred seventy-five thousand, six hundred thirty-one".