74761731 has 32 divisors (see below), whose sum is σ = 121501440. Its totient is φ = 45057600.

The previous prime is 74761727. The next prime is 74761741. The reversal of 74761731 is 13716747.

74761731 is a `hidden beast` number, since 7 + 4 + 7 + 617 + 31 = 666.

It is not a de Polignac number, because 74761731 - 2² = 74761727 is a prime.

It is a super-2 number, since 2×74761731² = 11178632844232722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74761711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62071 + ... + 63263.

It is an arithmetic number, because the mean of its divisors is an integer number (3796920).

Almost surely, 2^74761731 is an apocalyptic number.

74761731 is a deficient number, since it is larger than the sum of its proper divisors (46739709).

74761731 is a wasteful number, since it uses less digits than its factorization.

74761731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424 (or 1418 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 74761731 is about 8646.4866275268. The cubic root of 74761731 is about 421.2692725409.

The spelling of 74761731 in words is "seventy-four million, seven hundred sixty-one thousand, seven hundred thirty-one".