74971971 has 12 divisors (see below), whose sum is σ = 108772872. Its totient is φ = 49759776.

The previous prime is 74971933. The next prime is 74971987. The reversal of 74971971 is 17917947.

It is not a de Polignac number, because 74971971 - 2⁶ = 74971907 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (74971271) 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 11 ways as a sum of consecutive naturals, for example, 16306 + ... + 20391.

It is an arithmetic number, because the mean of its divisors is an integer number (9064406).

Almost surely, 2^74971971 is an apocalyptic number.

74971971 is a deficient number, since it is larger than the sum of its proper divisors (33800901).

74971971 is a wasteful number, since it uses less digits than its factorization.

74971971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36930 (or 36927 counting only the distinct ones).

The product of its digits is 111132, while the sum is 45.

The square root of 74971971 is about 8658.6356315530. The cubic root of 74971971 is about 421.6637914958.

The spelling of 74971971 in words is "seventy-four million, nine hundred seventy-one thousand, nine hundred seventy-one".