74937631 has 2 divisors, whose sum is σ = 74937632. Its totient is φ = 74937630.

The previous prime is 74937623. The next prime is 74937647. The reversal of 74937631 is 13673947.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74937631 - 2³ = 74937623 is a prime.

It is a super-2 number, since 2×74937631² = 11231297079784322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74937661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37468815 + 37468816.

It is an arithmetic number, because the mean of its divisors is an integer number (37468816).

Almost surely, 2^74937631 is an apocalyptic number.

74937631 is a deficient number, since it is larger than the sum of its proper divisors (1).

74937631 is an equidigital number, since it uses as much as digits as its factorization.

74937631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 40.

The square root of 74937631 is about 8656.6524130290. The cubic root of 74937631 is about 421.5994023392.

The spelling of 74937631 in words is "seventy-four million, nine hundred thirty-seven thousand, six hundred thirty-one".