76887361 has 4 divisors (see below), whose sum is σ = 77648724. Its totient is φ = 76126000.

The previous prime is 76887353. The next prime is 76887479. The reversal of 76887361 is 16378867.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64496961 + 12390400 = 8031^2 + 3520^2 .

It is a cyclic number.

It is not a de Polignac number, because 76887361 - 2³ = 76887353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76887331) 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, 380530 + ... + 380731.

It is an arithmetic number, because the mean of its divisors is an integer number (19412181).

Almost surely, 2^76887361 is an apocalyptic number.

It is an amenable number.

76887361 is a deficient number, since it is larger than the sum of its proper divisors (761363).

76887361 is a wasteful number, since it uses less digits than its factorization.

76887361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761362.

The product of its digits is 338688, while the sum is 46.

The square root of 76887361 is about 8768.5438357803. The cubic root of 76887361 is about 425.2245383279.

The spelling of 76887361 in words is "seventy-six million, eight hundred eighty-seven thousand, three hundred sixty-one".