74611731 has 4 divisors (see below), whose sum is σ = 99482312. Its totient is φ = 49741152.

The previous prime is 74611729. The next prime is 74611739. The reversal of 74611731 is 13711647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13711647 = 3 ⋅4570549.

It is not a de Polignac number, because 74611731 - 2¹ = 74611729 is a prime.

It is a super-2 number, since 2×74611731² = 11133820805632722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74611739) 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, 12435286 + ... + 12435291.

It is an arithmetic number, because the mean of its divisors is an integer number (24870578).

Almost surely, 2^74611731 is an apocalyptic number.

74611731 is a deficient number, since it is larger than the sum of its proper divisors (24870581).

74611731 is a wasteful number, since it uses less digits than its factorization.

74611731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24870580.

The product of its digits is 3528, while the sum is 30.

The square root of 74611731 is about 8637.8082289433. The cubic root of 74611731 is about 420.9873426533.

The spelling of 74611731 in words is "seventy-four million, six hundred eleven thousand, seven hundred thirty-one".