76744765 has 4 divisors (see below), whose sum is σ = 92093724. Its totient is φ = 61395808.

The previous prime is 76744739. The next prime is 76744769. The reversal of 76744765 is 56744767.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56744767 = 181 ⋅313507.

It can be written as a sum of positive squares in 2 ways, for example, as 38081241 + 38663524 = 6171^2 + 6218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76744765 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76744769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7674472 + ... + 7674481.

It is an arithmetic number, because the mean of its divisors is an integer number (23023431).

Almost surely, 2^76744765 is an apocalyptic number.

It is an amenable number.

76744765 is a deficient number, since it is larger than the sum of its proper divisors (15348959).

76744765 is a wasteful number, since it uses less digits than its factorization.

76744765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15348958.

The product of its digits is 987840, while the sum is 46.

The square root of 76744765 is about 8760.4089516415. The cubic root of 76744765 is about 424.9615005495.

The spelling of 76744765 in words is "seventy-six million, seven hundred forty-four thousand, seven hundred sixty-five".