87566142 has 8 divisors (see below), whose sum is σ = 175132296. Its totient is φ = 29188712.

The previous prime is 87566137. The next prime is 87566147. The reversal of 87566142 is 24166578.

It is an interprime number because it is at equal distance from previous prime (87566137) and next prime (87566147).

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

87566142 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 87566142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87566147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7297173 + ... + 7297184.

It is an arithmetic number, because the mean of its divisors is an integer number (21891537).

Almost surely, 2^87566142 is an apocalyptic number.

87566142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87566142 is a wasteful number, since it uses less digits than its factorization.

87566142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14594362.

The product of its digits is 80640, while the sum is 39.

The square root of 87566142 is about 9357.6782376827. The cubic root of 87566142 is about 444.0638350715.

The spelling of 87566142 in words is "eighty-seven million, five hundred sixty-six thousand, one hundred forty-two".