77040765 has 12 divisors (see below), whose sum is σ = 133537404. Its totient is φ = 41088384.

The previous prime is 77040739. The next prime is 77040773. The reversal of 77040765 is 56704077.

It can be written as a sum of positive squares in 2 ways, for example, as 46867716 + 30173049 = 6846^2 + 5493^2 .

It is not a de Polignac number, because 77040765 - 2⁷ = 77040637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 855964 + ... + 856053.

It is an arithmetic number, because the mean of its divisors is an integer number (11128117).

Almost surely, 2^77040765 is an apocalyptic number.

It is an amenable number.

77040765 is a deficient number, since it is larger than the sum of its proper divisors (56496639).

77040765 is a wasteful number, since it uses less digits than its factorization.

77040765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712028 (or 1712025 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 77040765 is about 8777.2868814913. The cubic root of 77040765 is about 425.5071500587.

The spelling of 77040765 in words is "seventy-seven million, forty thousand, seven hundred sixty-five".