74988947 has 32 divisors (see below), whose sum is σ = 89565696. Its totient is φ = 62092800.

The previous prime is 74988943. The next prime is 74989021.

74988947 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 74988947 - 2² = 74988943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74988892 and 74988901.

It is not an unprimeable number, because it can be changed into a prime (74988943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 663563 + ... + 663675.

It is an arithmetic number, because the mean of its divisors is an integer number (2798928).

Almost surely, 2^74988947 is an apocalyptic number.

74988947 is a deficient number, since it is larger than the sum of its proper divisors (14576749).

74988947 is a wasteful number, since it uses less digits than its factorization.

74988947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251.

The product of its digits is 4064256, while the sum is 56.

The square root of 74988947 is about 8659.6158690787. The cubic root of 74988947 is about 421.6956150525.

The spelling of 74988947 in words is "seventy-four million, nine hundred eighty-eight thousand, nine hundred forty-seven".