74816879 has 4 divisors (see below), whose sum is σ = 74934240. Its totient is φ = 74699520.

The previous prime is 74816827. The next prime is 74816887. The reversal of 74816879 is 97861847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97861847 = 131 ⋅747037.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74816879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74816899) 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 3 ways as a sum of consecutive naturals, for example, 57719 + ... + 59000.

It is an arithmetic number, because the mean of its divisors is an integer number (18733560).

Almost surely, 2^74816879 is an apocalyptic number.

74816879 is a deficient number, since it is larger than the sum of its proper divisors (117361).

74816879 is a wasteful number, since it uses less digits than its factorization.

74816879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117360.

The product of its digits is 677376, while the sum is 50.

The square root of 74816879 is about 8649.6750806027. The cubic root of 74816879 is about 421.3728301920.

The spelling of 74816879 in words is "seventy-four million, eight hundred sixteen thousand, eight hundred seventy-nine".