74859865 has 4 divisors (see below), whose sum is σ = 89831844. Its totient is φ = 59887888.

The previous prime is 74859859. The next prime is 74859881. The reversal of 74859865 is 56895847.

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 39087504 + 35772361 = 6252^2 + 5981^2 .

It is a cyclic number.

It is not a de Polignac number, because 74859865 - 2⁷ = 74859737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7485982 + ... + 7485991.

It is an arithmetic number, because the mean of its divisors is an integer number (22457961).

Almost surely, 2^74859865 is an apocalyptic number.

It is an amenable number.

74859865 is a deficient number, since it is larger than the sum of its proper divisors (14971979).

74859865 is a wasteful number, since it uses less digits than its factorization.

74859865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14971978.

The product of its digits is 2419200, while the sum is 52.

The square root of 74859865 is about 8652.1595570123. The cubic root of 74859865 is about 421.4535145905.

The spelling of 74859865 in words is "seventy-four million, eight hundred fifty-nine thousand, eight hundred sixty-five".