77326865 has 72 divisors (see below), whose sum is σ = 126786240. Its totient is φ = 44193600.

The previous prime is 77326831. The next prime is 77326877. The reversal of 77326865 is 56862377.

It is not a de Polignac number, because 77326865 - 2¹⁰ = 77325841 is a prime.

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 71 ways as a sum of consecutive naturals, for example, 2494400 + ... + 2494430.

It is an arithmetic number, because the mean of its divisors is an integer number (1760920).

Almost surely, 2^77326865 is an apocalyptic number.

It is an amenable number.

77326865 is a deficient number, since it is larger than the sum of its proper divisors (49459375).

77326865 is a wasteful number, since it uses less digits than its factorization.

77326865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 73 counting only the distinct ones).

The product of its digits is 423360, while the sum is 44.

The square root of 77326865 is about 8793.5695255112. The cubic root of 77326865 is about 426.0332231063.

The spelling of 77326865 in words is "seventy-seven million, three hundred twenty-six thousand, eight hundred sixty-five".