87632879 has 2 divisors, whose sum is σ = 87632880. Its totient is φ = 87632878.

The previous prime is 87632869. The next prime is 87632917. The reversal of 87632879 is 97823678.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87632879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87632819) 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, 43816439 + 43816440.

It is an arithmetic number, because the mean of its divisors is an integer number (43816440).

Almost surely, 2^87632879 is an apocalyptic number.

87632879 is a deficient number, since it is larger than the sum of its proper divisors (1).

87632879 is an equidigital number, since it uses as much as digits as its factorization.

87632879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 50.

The square root of 87632879 is about 9361.2434537299. The cubic root of 87632879 is about 444.1766182468.

The spelling of 87632879 in words is "eighty-seven million, six hundred thirty-two thousand, eight hundred seventy-nine".