74877689 has 4 divisors (see below), whose sum is σ = 78818640. Its totient is φ = 70936740.

The previous prime is 74877653. The next prime is 74877743. The reversal of 74877689 is 98677847.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74877689 - 2⁸ = 74877433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74877629) 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, 1970447 + ... + 1970484.

It is an arithmetic number, because the mean of its divisors is an integer number (19704660).

Almost surely, 2^74877689 is an apocalyptic number.

It is an amenable number.

74877689 is a deficient number, since it is larger than the sum of its proper divisors (3940951).

74877689 is a wasteful number, since it uses less digits than its factorization.

74877689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940950.

The product of its digits is 4741632, while the sum is 56.

The square root of 74877689 is about 8653.1895275673. The cubic root of 74877689 is about 421.4869610455.

The spelling of 74877689 in words is "seventy-four million, eight hundred seventy-seven thousand, six hundred eighty-nine".