87660579 has 8 divisors (see below), whose sum is σ = 117096640. Its totient is φ = 58332456.

The previous prime is 87660577. The next prime is 87660581. The reversal of 87660579 is 97506678.

It is an interprime number because it is at equal distance from previous prime (87660577) and next prime (87660581).

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

It is not a de Polignac number, because 87660579 - 2¹ = 87660577 is a prime.

It is a super-2 number, since 2×87660579² = 15368754221230482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87660571) 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, 25069 + ... + 28350.

It is an arithmetic number, because the mean of its divisors is an integer number (14637080).

Almost surely, 2^87660579 is an apocalyptic number.

87660579 is a deficient number, since it is larger than the sum of its proper divisors (29436061).

87660579 is a wasteful number, since it uses less digits than its factorization.

87660579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53969.

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 87660579 is about 9362.7228411398. The cubic root of 87660579 is about 444.2234134539.

The spelling of 87660579 in words is "eighty-seven million, six hundred sixty thousand, five hundred seventy-nine".