74604665 has 4 divisors (see below), whose sum is σ = 89525604. Its totient is φ = 59683728.

The previous prime is 74604661. The next prime is 74604671. The reversal of 74604665 is 56640647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56640647 = 7 ⋅8091521.

It can be written as a sum of positive squares in 2 ways, for example, as 22534009 + 52070656 = 4747^2 + 7216^2 .

It is a cyclic number.

It is not a de Polignac number, because 74604665 - 2² = 74604661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74604661) 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, 7460462 + ... + 7460471.

It is an arithmetic number, because the mean of its divisors is an integer number (22381401).

Almost surely, 2^74604665 is an apocalyptic number.

It is an amenable number.

74604665 is a deficient number, since it is larger than the sum of its proper divisors (14920939).

74604665 is a wasteful number, since it uses less digits than its factorization.

74604665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14920938.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 74604665 is about 8637.3992034640. The cubic root of 74604665 is about 420.9740525606.

The spelling of 74604665 in words is "seventy-four million, six hundred four thousand, six hundred sixty-five".