87890171 has 8 divisors (see below), whose sum is σ = 88601040. Its totient is φ = 87182368.

The previous prime is 87890167. The next prime is 87890197. The reversal of 87890171 is 17109878.

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

It is a cyclic number.

It is not a de Polignac number, because 87890171 - 2² = 87890167 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87890771) 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, 129485 + ... + 130161.

It is an arithmetic number, because the mean of its divisors is an integer number (11075130).

Almost surely, 2^87890171 is an apocalyptic number.

87890171 is a deficient number, since it is larger than the sum of its proper divisors (710869).

87890171 is a wasteful number, since it uses less digits than its factorization.

87890171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533.

The product of its (nonzero) digits is 28224, while the sum is 41.

The square root of 87890171 is about 9374.9757866354. The cubic root of 87890171 is about 444.6108975111.

The spelling of 87890171 in words is "eighty-seven million, eight hundred ninety thousand, one hundred seventy-one".