76811481 has 12 divisors (see below), whose sum is σ = 111593508. Its totient is φ = 50910624.

The previous prime is 76811477. The next prime is 76811503. The reversal of 76811481 is 18411867.

It can be written as a sum of positive squares in 2 ways, for example, as 74235456 + 2576025 = 8616^2 + 1605^2 .

It is not a de Polignac number, because 76811481 - 2² = 76811477 is a prime.

It is a super-2 number, since 2×76811481² = 11800007226826722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (76811431) 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 11 ways as a sum of consecutive naturals, for example, 23110 + ... + 26223.

It is an arithmetic number, because the mean of its divisors is an integer number (9299459).

Almost surely, 2^76811481 is an apocalyptic number.

It is an amenable number.

76811481 is a deficient number, since it is larger than the sum of its proper divisors (34782027).

76811481 is a wasteful number, since it uses less digits than its factorization.

76811481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49512 (or 49509 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 76811481 is about 8764.2159375497. The cubic root of 76811481 is about 425.0846078382.

The spelling of 76811481 in words is "seventy-six million, eight hundred eleven thousand, four hundred eighty-one".