87890167 has 2 divisors, whose sum is σ = 87890168. Its totient is φ = 87890166.

The previous prime is 87890149. The next prime is 87890197. The reversal of 87890167 is 76109878.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87890167 - 2¹⁹ = 87365879 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87890137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43945083 + 43945084.

It is an arithmetic number, because the mean of its divisors is an integer number (43945084).

Almost surely, 2^87890167 is an apocalyptic number.

87890167 is a deficient number, since it is larger than the sum of its proper divisors (1).

87890167 is an equidigital number, since it uses as much as digits as its factorization.

87890167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 87890167 is about 9374.9755733015. The cubic root of 87890167 is about 444.6108907662.

The spelling of 87890167 in words is "eighty-seven million, eight hundred ninety thousand, one hundred sixty-seven".