87995617 has 2 divisors, whose sum is σ = 87995618. Its totient is φ = 87995616.

The previous prime is 87995603. The next prime is 87995629. The reversal of 87995617 is 71659978.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57093136 + 30902481 = 7556^2 + 5559^2 .

It is a cyclic number.

It is not a de Polignac number, because 87995617 - 2²³ = 79607009 is a prime.

It is a super-2 number, since 2×87995617² = 15486457222421378, which contains 22 as substring.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (87992617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43997808 + 43997809.

It is an arithmetic number, because the mean of its divisors is an integer number (43997809).

Almost surely, 2^87995617 is an apocalyptic number.

It is an amenable number.

87995617 is a deficient number, since it is larger than the sum of its proper divisors (1).

87995617 is an equidigital number, since it uses as much as digits as its factorization.

87995617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 52.

The square root of 87995617 is about 9380.5979020529. The cubic root of 87995617 is about 444.7886333665.

The spelling of 87995617 in words is "eighty-seven million, nine hundred ninety-five thousand, six hundred seventeen".