74274631 has 4 divisors (see below), whose sum is σ = 76001992. Its totient is φ = 72547272.

The previous prime is 74274623. The next prime is 74274643. The reversal of 74274631 is 13647247.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74274631 - 2³ = 74274623 is a prime.

It is a super-2 number, since 2×74274631² = 11033441620372322, 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 (74274601) 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, 863616 + ... + 863701.

It is an arithmetic number, because the mean of its divisors is an integer number (19000498).

Almost surely, 2^74274631 is an apocalyptic number.

74274631 is a deficient number, since it is larger than the sum of its proper divisors (1727361).

74274631 is a wasteful number, since it uses less digits than its factorization.

74274631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727360.

The product of its digits is 28224, while the sum is 34.

The square root of 74274631 is about 8618.2730868777. The cubic root of 74274631 is about 420.3523705751.

The spelling of 74274631 in words is "seventy-four million, two hundred seventy-four thousand, six hundred thirty-one".