74939631 has 8 divisors (see below), whose sum is σ = 107605680. Its totient is φ = 46116672.

The previous prime is 74939597. The next prime is 74939647. The reversal of 74939631 is 13693947.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74939631 - 2¹⁰ = 74938607 is a prime.

It is a super-2 number, since 2×74939631² = 11231896588832322, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74939131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 960726 + ... + 960803.

It is an arithmetic number, because the mean of its divisors is an integer number (13450710).

Almost surely, 2^74939631 is an apocalyptic number.

74939631 is a deficient number, since it is larger than the sum of its proper divisors (32666049).

74939631 is a wasteful number, since it uses less digits than its factorization.

74939631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921545.

The product of its digits is 122472, while the sum is 42.

The square root of 74939631 is about 8656.7679303537. The cubic root of 74939631 is about 421.6031529751.

The spelling of 74939631 in words is "seventy-four million, nine hundred thirty-nine thousand, six hundred thirty-one".