87616957 has 2 divisors, whose sum is σ = 87616958. Its totient is φ = 87616956.

The previous prime is 87616951. The next prime is 87616979. The reversal of 87616957 is 75961678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85729081 + 1887876 = 9259^2 + 1374^2 .

It is a cyclic number.

It is not a de Polignac number, because 87616957 - 2²³ = 79228349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87616957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87616951) 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, 43808478 + 43808479.

It is an arithmetic number, because the mean of its divisors is an integer number (43808479).

Almost surely, 2^87616957 is an apocalyptic number.

It is an amenable number.

87616957 is a deficient number, since it is larger than the sum of its proper divisors (1).

87616957 is an equidigital number, since it uses as much as digits as its factorization.

87616957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 49.

The square root of 87616957 is about 9360.3929938865. The cubic root of 87616957 is about 444.1497158308.

The spelling of 87616957 in words is "eighty-seven million, six hundred sixteen thousand, nine hundred fifty-seven".