74987565 has 16 divisors (see below), whose sum is σ = 122907456. Its totient is φ = 39017600.

The previous prime is 74987557. The next prime is 74987569. The reversal of 74987565 is 56578947.

It is not a de Polignac number, because 74987565 - 2³ = 74987557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74987569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60351 + ... + 61580.

It is an arithmetic number, because the mean of its divisors is an integer number (7681716).

Almost surely, 2^74987565 is an apocalyptic number.

It is an amenable number.

74987565 is a deficient number, since it is larger than the sum of its proper divisors (47919891).

74987565 is a wasteful number, since it uses less digits than its factorization.

74987565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121980.

The product of its digits is 2116800, while the sum is 51.

The square root of 74987565 is about 8659.5360730238. The cubic root of 74987565 is about 421.6930245067.

The spelling of 74987565 in words is "seventy-four million, nine hundred eighty-seven thousand, five hundred sixty-five".