74856865 has 16 divisors (see below), whose sum is σ = 100120320. Its totient is φ = 53395200.

The previous prime is 74856779. The next prime is 74856869. The reversal of 74856865 is 56865847.

It is not a de Polignac number, because 74856865 - 2¹³ = 74848673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74856869) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 21561 + ... + 24790.

It is an arithmetic number, because the mean of its divisors is an integer number (6257520).

Almost surely, 2^74856865 is an apocalyptic number.

It is an amenable number.

74856865 is a deficient number, since it is larger than the sum of its proper divisors (25263455).

74856865 is a wasteful number, since it uses less digits than its factorization.

74856865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46392.

The product of its digits is 1612800, while the sum is 49.

The square root of 74856865 is about 8651.9861881536. The cubic root of 74856865 is about 421.4478846158.

The spelling of 74856865 in words is "seventy-four million, eight hundred fifty-six thousand, eight hundred sixty-five".