88876561 has 16 divisors (see below), whose sum is σ = 99746640. Its totient is φ = 78776320.

The previous prime is 88876559. The next prime is 88876589. The reversal of 88876561 is 16567888.

It can be written as a sum of positive squares in 8 ways, for example, as 1547536 + 87329025 = 1244^2 + 9345^2 .

It is a cyclic number.

It is not a de Polignac number, because 88876561 - 2¹ = 88876559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88871561) 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, 18015 + ... + 22411.

It is an arithmetic number, because the mean of its divisors is an integer number (6234165).

Almost surely, 2^88876561 is an apocalyptic number.

It is an amenable number.

88876561 is a deficient number, since it is larger than the sum of its proper divisors (10870079).

88876561 is a wasteful number, since it uses less digits than its factorization.

88876561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484.

The product of its digits is 645120, while the sum is 49.

The square root of 88876561 is about 9427.4366081136. The cubic root of 88876561 is about 446.2680006967.

The spelling of 88876561 in words is "eighty-eight million, eight hundred seventy-six thousand, five hundred sixty-one".