74633861 has 4 divisors (see below), whose sum is σ = 74954412. Its totient is φ = 74313312.

The previous prime is 74633789. The next prime is 74633917. The reversal of 74633861 is 16833647.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34880836 + 39753025 = 5906^2 + 6305^2 .

It is a cyclic number.

It is not a de Polignac number, because 74633861 - 2²⁶ = 7524997 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 (74633261) 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, 159926 + ... + 160391.

It is an arithmetic number, because the mean of its divisors is an integer number (18738603).

Almost surely, 2^74633861 is an apocalyptic number.

It is an amenable number.

74633861 is a deficient number, since it is larger than the sum of its proper divisors (320551).

74633861 is a wasteful number, since it uses less digits than its factorization.

74633861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320550.

The product of its digits is 72576, while the sum is 38.

The square root of 74633861 is about 8639.0891302266. The cubic root of 74633861 is about 421.0289604563.

The spelling of 74633861 in words is "seventy-four million, six hundred thirty-three thousand, eight hundred sixty-one".