87676637 has 2 divisors, whose sum is σ = 87676638. Its totient is φ = 87676636.

The previous prime is 87676607. The next prime is 87676661. The reversal of 87676637 is 73667678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83375161 + 4301476 = 9131^2 + 2074^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87676637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87676607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43838318 + 43838319.

It is an arithmetic number, because the mean of its divisors is an integer number (43838319).

Almost surely, 2^87676637 is an apocalyptic number.

It is an amenable number.

87676637 is a deficient number, since it is larger than the sum of its proper divisors (1).

87676637 is an equidigital number, since it uses as much as digits as its factorization.

87676637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1778112, while the sum is 50.

The square root of 87676637 is about 9363.5803515536. The cubic root of 87676637 is about 444.2505366456.

The spelling of 87676637 in words is "eighty-seven million, six hundred seventy-six thousand, six hundred thirty-seven".