74889689 has 12 divisors (see below), whose sum is σ = 88763364. Its totient is φ = 62977824.

The previous prime is 74889677. The next prime is 74889701. The reversal of 74889689 is 98698847.

It is an interprime number because it is at equal distance from previous prime (74889677) and next prime (74889701).

It can be written as a sum of positive squares in 2 ways, for example, as 50879689 + 24010000 = 7133^2 + 4900^2 .

It is not a de Polignac number, because 74889689 - 2²⁰ = 73841113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74889289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11822 + ... + 17015.

It is an arithmetic number, because the mean of its divisors is an integer number (7396947).

Almost surely, 2^74889689 is an apocalyptic number.

It is an amenable number.

74889689 is a deficient number, since it is larger than the sum of its proper divisors (13873675).

74889689 is a wasteful number, since it uses less digits than its factorization.

74889689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28904 (or 28897 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 59.

The square root of 74889689 is about 8653.8828857340. The cubic root of 74889689 is about 421.5094758668.

The spelling of 74889689 in words is "seventy-four million, eight hundred eighty-nine thousand, six hundred eighty-nine".