87890163 has 8 divisors (see below), whose sum is σ = 117690768. Its totient is φ = 58341504.

The previous prime is 87890149. The next prime is 87890167. The reversal of 87890163 is 36109878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87890163 - 2⁴ = 87890147 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (87890167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62170 + ... + 63567.

It is an arithmetic number, because the mean of its divisors is an integer number (14711346).

Almost surely, 2^87890163 is an apocalyptic number.

87890163 is a deficient number, since it is larger than the sum of its proper divisors (29800605).

87890163 is a wasteful number, since it uses less digits than its factorization.

87890163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125973.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 87890163 is about 9374.9753599676. The cubic root of 87890163 is about 444.6108840212.

The spelling of 87890163 in words is "eighty-seven million, eight hundred ninety thousand, one hundred sixty-three".