87175867 has 2 divisors, whose sum is σ = 87175868. Its totient is φ = 87175866.

The previous prime is 87175861. The next prime is 87175871. The reversal of 87175867 is 76857178.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87175867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87175867.

It is not a weakly prime, because it can be changed into another prime (87175861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43587933 + 43587934.

It is an arithmetic number, because the mean of its divisors is an integer number (43587934).

Almost surely, 2^87175867 is an apocalyptic number.

87175867 is a deficient number, since it is larger than the sum of its proper divisors (1).

87175867 is an equidigital number, since it uses as much as digits as its factorization.

87175867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 658560, while the sum is 49.

The square root of 87175867 is about 9336.8017543482. The cubic root of 87175867 is about 443.4031340276.

The spelling of 87175867 in words is "eighty-seven million, one hundred seventy-five thousand, eight hundred sixty-seven".