74386565 has 12 divisors (see below), whose sum is σ = 98117292. Its totient is φ = 54098880.

The previous prime is 74386561. The next prime is 74386589. The reversal of 74386565 is 56568347.

It can be written as a sum of positive squares in 2 ways, for example, as 51595489 + 22791076 = 7183^2 + 4774^2 .

It is not a de Polignac number, because 74386565 - 2² = 74386561 is a prime.

It is a super-2 number, since 2×74386565² = 11066722104998450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74386561) 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, 60872 + ... + 62081.

It is an arithmetic number, because the mean of its divisors is an integer number (8176441).

Almost surely, 2^74386565 is an apocalyptic number.

It is an amenable number.

74386565 is a deficient number, since it is larger than the sum of its proper divisors (23730727).

74386565 is a wasteful number, since it uses less digits than its factorization.

74386565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122980 (or 122969 counting only the distinct ones).

The product of its digits is 604800, while the sum is 44.

The square root of 74386565 is about 8624.7646344697. The cubic root of 74386565 is about 420.5634256163.

The spelling of 74386565 in words is "seventy-four million, three hundred eighty-six thousand, five hundred sixty-five".