87125665 has 8 divisors (see below), whose sum is σ = 114055488. Its totient is φ = 63364080.

The previous prime is 87125653. The next prime is 87125669. The reversal of 87125665 is 56652178.

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

It is not a de Polignac number, because 87125665 - 2¹⁹ = 86601377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87125669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791997 + ... + 792106.

It is an arithmetic number, because the mean of its divisors is an integer number (14256936).

Almost surely, 2^87125665 is an apocalyptic number.

It is an amenable number.

87125665 is a deficient number, since it is larger than the sum of its proper divisors (26929823).

87125665 is a wasteful number, since it uses less digits than its factorization.

87125665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584119.

The product of its digits is 100800, while the sum is 40.

The square root of 87125665 is about 9334.1129733896. The cubic root of 87125665 is about 443.3180034397.

The spelling of 87125665 in words is "eighty-seven million, one hundred twenty-five thousand, six hundred sixty-five".