87636331 has 2 divisors, whose sum is σ = 87636332. Its totient is φ = 87636330.

The previous prime is 87636277. The next prime is 87636337. The reversal of 87636331 is 13363678.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87636331 - 2⁷ = 87636203 is a prime.

It is a super-2 number, since 2×87636331² = 15360253022283122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87636337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43818165 + 43818166.

It is an arithmetic number, because the mean of its divisors is an integer number (43818166).

Almost surely, 2^87636331 is an apocalyptic number.

87636331 is a deficient number, since it is larger than the sum of its proper divisors (1).

87636331 is an equidigital number, since it uses as much as digits as its factorization.

87636331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 87636331 is about 9361.4278291295. The cubic root of 87636331 is about 444.1824504472.

The spelling of 87636331 in words is "eighty-seven million, six hundred thirty-six thousand, three hundred thirty-one".