87566231 has 8 divisors (see below), whose sum is σ = 92294400. Its totient is φ = 82850040.

The previous prime is 87566191. The next prime is 87566243. The reversal of 87566231 is 13266578.

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 87566231 - 2¹⁰ = 87565207 is a prime.

It is a super-2 number, since 2×87566231² = 15335689623090722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87566251) 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, 14780 + ... + 19838.

It is an arithmetic number, because the mean of its divisors is an integer number (11536800).

Almost surely, 2^87566231 is an apocalyptic number.

87566231 is a deficient number, since it is larger than the sum of its proper divisors (4728169).

87566231 is a wasteful number, since it uses less digits than its factorization.

87566231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5989.

The product of its digits is 60480, while the sum is 38.

The square root of 87566231 is about 9357.6829931346. The cubic root of 87566231 is about 444.0639855165.

The spelling of 87566231 in words is "eighty-seven million, five hundred sixty-six thousand, two hundred thirty-one".