87613557 has 8 divisors (see below), whose sum is σ = 116885760. Its totient is φ = 58375200.

The previous prime is 87613517. The next prime is 87613571. The reversal of 87613557 is 75531678.

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

It is not a de Polignac number, because 87613557 - 2¹⁰ = 87612533 is a prime.

It is a super-2 number, since 2×87613557² = 15352270740384498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87613517) 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, 1632 + ... + 13337.

It is an arithmetic number, because the mean of its divisors is an integer number (14610720).

Almost surely, 2^87613557 is an apocalyptic number.

It is an amenable number.

87613557 is a deficient number, since it is larger than the sum of its proper divisors (29272203).

87613557 is a wasteful number, since it uses less digits than its factorization.

87613557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16923.

The product of its digits is 176400, while the sum is 42.

The square root of 87613557 is about 9360.2113758184. The cubic root of 87613557 is about 444.1439706394.

The spelling of 87613557 in words is "eighty-seven million, six hundred thirteen thousand, five hundred fifty-seven".