74870731 has 8 divisors (see below), whose sum is σ = 81602640. Its totient is φ = 68277792.

The previous prime is 74870717. The next prime is 74870743. The reversal of 74870731 is 13707847.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74870731 - 2⁵ = 74870699 is a prime.

It is a super-2 number, since 2×74870731² = 11211252720948722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74870701) 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 in 7 ways as a sum of consecutive naturals, for example, 33616 + ... + 35773.

It is an arithmetic number, because the mean of its divisors is an integer number (10200330).

Almost surely, 2^74870731 is an apocalyptic number.

74870731 is a deficient number, since it is larger than the sum of its proper divisors (6731909).

74870731 is a wasteful number, since it uses less digits than its factorization.

74870731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69485.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 74870731 is about 8652.7874699429. The cubic root of 74870731 is about 421.4739050998.

The spelling of 74870731 in words is "seventy-four million, eight hundred seventy thousand, seven hundred thirty-one".