74877731 has 4 divisors (see below), whose sum is σ = 74922672. Its totient is φ = 74832792.

The previous prime is 74877653. The next prime is 74877743. The reversal of 74877731 is 13777847.

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 74877731 - 2¹⁸ = 74615587 is a prime.

It is a super-2 number, since 2×74877731² = 11213349199416722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74877791) 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, 19871 + ... + 23336.

It is an arithmetic number, because the mean of its divisors is an integer number (18730668).

Almost surely, 2^74877731 is an apocalyptic number.

74877731 is a deficient number, since it is larger than the sum of its proper divisors (44941).

74877731 is a wasteful number, since it uses less digits than its factorization.

74877731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44940.

The product of its digits is 230496, while the sum is 44.

The square root of 74877731 is about 8653.1919544177. The cubic root of 74877731 is about 421.4870398516.

The spelling of 74877731 in words is "seventy-four million, eight hundred seventy-seven thousand, seven hundred thirty-one".