76811797 has 8 divisors (see below), whose sum is σ = 81440856. Its totient is φ = 72195072.

The previous prime is 76811767. The next prime is 76811821. The reversal of 76811797 is 79711867.

It can be written as a sum of positive squares in 4 ways, for example, as 13942756 + 62869041 = 3734^2 + 7929^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76811797 - 2¹⁵ = 76779029 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 (76811767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11853 + ... + 17149.

It is an arithmetic number, because the mean of its divisors is an integer number (10180107).

Almost surely, 2^76811797 is an apocalyptic number.

It is an amenable number.

76811797 is a deficient number, since it is larger than the sum of its proper divisors (4629059).

76811797 is a wasteful number, since it uses less digits than its factorization.

76811797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6167.

The product of its digits is 148176, while the sum is 46.

The square root of 76811797 is about 8764.2339653845. The cubic root of 76811797 is about 425.0851907656.

The spelling of 76811797 in words is "seventy-six million, eight hundred eleven thousand, seven hundred ninety-seven".