74963565 has 24 divisors (see below), whose sum is σ = 130286520. Its totient is φ = 39873024.

The previous prime is 74963563. The next prime is 74963593. The reversal of 74963565 is 56536947.

74963565 is a `hidden beast` number, since 7 + 4 + 9 + 635 + 6 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8328996 + 66634569 = 2886^2 + 8163^2 .

It is not a de Polignac number, because 74963565 - 2¹ = 74963563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 74963565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74963563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16369 + ... + 20441.

It is an arithmetic number, because the mean of its divisors is an integer number (5428605).

Almost surely, 2^74963565 is an apocalyptic number.

It is an amenable number.

74963565 is a deficient number, since it is larger than the sum of its proper divisors (55322955).

74963565 is a wasteful number, since it uses less digits than its factorization.

74963565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493 (or 4490 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 74963565 is about 8658.1502065972. The cubic root of 74963565 is about 421.6480316580.

It can be divided in two parts, 749635 and 65, that added together give a triangular number (749700 = T₁₂₂₄).

The spelling of 74963565 in words is "seventy-four million, nine hundred sixty-three thousand, five hundred sixty-five".