87158615 has 16 divisors (see below), whose sum is σ = 109425600. Its totient is φ = 66519552.

The previous prime is 87158597. The next prime is 87158627. The reversal of 87158615 is 51685178.

It is a cyclic number.

It is not a de Polignac number, because 87158615 - 2⁶ = 87158551 is a prime.

It is a super-3 number, since 3×87158615³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57791 + ... + 59279.

It is an arithmetic number, because the mean of its divisors is an integer number (6839100).

Almost surely, 2^87158615 is an apocalyptic number.

87158615 is a deficient number, since it is larger than the sum of its proper divisors (22266985).

87158615 is a wasteful number, since it uses less digits than its factorization.

87158615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026.

The product of its digits is 67200, while the sum is 41.

The square root of 87158615 is about 9335.8778376755. The cubic root of 87158615 is about 443.3738824476.

The spelling of 87158615 in words is "eighty-seven million, one hundred fifty-eight thousand, six hundred fifteen".