74607631 has 4 divisors (see below), whose sum is σ = 85265872. Its totient is φ = 63949392.

The previous prime is 74607629. The next prime is 74607667. The reversal of 74607631 is 13670647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13670647 = 163 ⋅83869.

It is a cyclic number.

It is not a de Polignac number, because 74607631 - 2¹ = 74607629 is a prime.

It is a super-2 number, since 2×74607631² = 11132597206864322, 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 (74607601) 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, 5329110 + ... + 5329123.

It is an arithmetic number, because the mean of its divisors is an integer number (21316468).

Almost surely, 2^74607631 is an apocalyptic number.

74607631 is a deficient number, since it is larger than the sum of its proper divisors (10658241).

74607631 is a wasteful number, since it uses less digits than its factorization.

74607631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10658240.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 74607631 is about 8637.5708969594. The cubic root of 74607631 is about 420.9796312667.

The spelling of 74607631 in words is "seventy-four million, six hundred seven thousand, six hundred thirty-one".