73861865 has 24 divisors (see below), whose sum is σ = 112482432. Its totient is φ = 46042080.

The previous prime is 73861859. The next prime is 73861877. The reversal of 73861865 is 56816837.

It is not a de Polignac number, because 73861865 - 2⁴ = 73861849 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 23 ways as a sum of consecutive naturals, for example, 11009 + ... + 16398.

It is an arithmetic number, because the mean of its divisors is an integer number (4686768).

Almost surely, 2^73861865 is an apocalyptic number.

It is an amenable number.

73861865 is a deficient number, since it is larger than the sum of its proper divisors (38620567).

73861865 is a wasteful number, since it uses less digits than its factorization.

73861865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27437 (or 27430 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 73861865 is about 8594.2925828715. The cubic root of 73861865 is about 419.5722496894.

The spelling of 73861865 in words is "seventy-three million, eight hundred sixty-one thousand, eight hundred sixty-five".