87500661 has 8 divisors (see below), whose sum is σ = 116722944. Its totient is φ = 58306080.

The previous prime is 87500659. The next prime is 87500669. The reversal of 87500661 is 16600578.

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

It is not a de Polignac number, because 87500661 - 2¹ = 87500659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87500669) 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, 2145 + ... + 13401.

It is an arithmetic number, because the mean of its divisors is an integer number (14590368).

Almost surely, 2^87500661 is an apocalyptic number.

It is an amenable number.

87500661 is a deficient number, since it is larger than the sum of its proper divisors (29222283).

87500661 is a wasteful number, since it uses less digits than its factorization.

87500661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13851.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 87500661 is about 9354.1787988043. The cubic root of 87500661 is about 443.9531187819.

The spelling of 87500661 in words is "eighty-seven million, five hundred thousand, six hundred sixty-one".