74865565 has 4 divisors (see below), whose sum is σ = 89838684. Its totient is φ = 59892448.

The previous prime is 74865563. The next prime is 74865587. The reversal of 74865565 is 56556847.

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 50154724 + 24710841 = 7082^2 + 4971^2 .

It is a cyclic number.

It is not a de Polignac number, because 74865565 - 2¹ = 74865563 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 (74865563) 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, 7486552 + ... + 7486561.

It is an arithmetic number, because the mean of its divisors is an integer number (22459671).

Almost surely, 2^74865565 is an apocalyptic number.

It is an amenable number.

74865565 is a deficient number, since it is larger than the sum of its proper divisors (14973119).

74865565 is a wasteful number, since it uses less digits than its factorization.

74865565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14973118.

The product of its digits is 1008000, while the sum is 46.

The square root of 74865565 is about 8652.4889482738. The cubic root of 74865565 is about 421.4642111280.

The spelling of 74865565 in words is "seventy-four million, eight hundred sixty-five thousand, five hundred sixty-five".