74921983 has 4 divisors (see below), whose sum is σ = 74985568. Its totient is φ = 74858400.

The previous prime is 74921963. The next prime is 74921989. The reversal of 74921983 is 38912947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38912947 = 601 ⋅64747.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74921983 is a prime.

It is a super-2 number, since 2×74921983² = 11226607073304578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74921989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29991 + ... + 32392.

It is an arithmetic number, because the mean of its divisors is an integer number (18746392).

Almost surely, 2^74921983 is an apocalyptic number.

74921983 is a deficient number, since it is larger than the sum of its proper divisors (63585).

74921983 is a wasteful number, since it uses less digits than its factorization.

74921983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63584.

The product of its digits is 108864, while the sum is 43.

The square root of 74921983 is about 8655.7485522628. The cubic root of 74921983 is about 421.5700550602.

The spelling of 74921983 in words is "seventy-four million, nine hundred twenty-one thousand, nine hundred eighty-three".