74634631 has 4 divisors (see below), whose sum is σ = 74652064. Its totient is φ = 74617200.

The previous prime is 74634629. The next prime is 74634673. The reversal of 74634631 is 13643647.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13643647 = 1069 ⋅12763.

It is a cyclic number.

It is not a de Polignac number, because 74634631 - 2¹ = 74634629 is a prime.

It is a super-2 number, since 2×74634631² = 11140656289012322, 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 (74634601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2626 + ... + 12496.

It is an arithmetic number, because the mean of its divisors is an integer number (18663016).

Almost surely, 2^74634631 is an apocalyptic number.

74634631 is a deficient number, since it is larger than the sum of its proper divisors (17433).

74634631 is an equidigital number, since it uses as much as digits as its factorization.

74634631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17432.

The product of its digits is 36288, while the sum is 34.

The square root of 74634631 is about 8639.1336949951. The cubic root of 74634631 is about 421.0304083745.

The spelling of 74634631 in words is "seventy-four million, six hundred thirty-four thousand, six hundred thirty-one".