87289161 has 8 divisors (see below), whose sum is σ = 116971200. Its totient is φ = 57899952.

The previous prime is 87289157. The next prime is 87289177. The reversal of 87289161 is 16198278.

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

It is not a de Polignac number, because 87289161 - 2² = 87289157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87289561) 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, 72510 + ... + 73703.

It is an arithmetic number, because the mean of its divisors is an integer number (14621400).

Almost surely, 2^87289161 is an apocalyptic number.

It is an amenable number.

87289161 is a deficient number, since it is larger than the sum of its proper divisors (29682039).

87289161 is a wasteful number, since it uses less digits than its factorization.

87289161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146415.

The product of its digits is 48384, while the sum is 42.

The square root of 87289161 is about 9342.8668512400. The cubic root of 87289161 is about 443.5951335273.

The spelling of 87289161 in words is "eighty-seven million, two hundred eighty-nine thousand, one hundred sixty-one".