87618481 has 16 divisors (see below), whose sum is σ = 95846400. Its totient is φ = 79815888.

The previous prime is 87618467. The next prime is 87618497. The reversal of 87618481 is 18481678.

It is a cyclic number.

It is not a de Polignac number, because 87618481 - 2⁵ = 87618449 is a prime.

It is a super-2 number, since 2×87618481² = 15353996425494722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87618581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51856 + ... + 53518.

It is an arithmetic number, because the mean of its divisors is an integer number (5990400).

Almost surely, 2^87618481 is an apocalyptic number.

It is an amenable number.

87618481 is a deficient number, since it is larger than the sum of its proper divisors (8227919).

87618481 is a wasteful number, since it uses less digits than its factorization.

87618481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788.

The product of its digits is 86016, while the sum is 43.

The square root of 87618481 is about 9360.4744003710. The cubic root of 87618481 is about 444.1522909802.

The spelling of 87618481 in words is "eighty-seven million, six hundred eighteen thousand, four hundred eighty-one".