88799561 has 4 divisors (see below), whose sum is σ = 89220624. Its totient is φ = 88378500.

The previous prime is 88799549. The next prime is 88799569. The reversal of 88799561 is 16599788.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88799561 - 2¹⁰ = 88798537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88799569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210215 + ... + 210636.

It is an arithmetic number, because the mean of its divisors is an integer number (22305156).

Almost surely, 2^88799561 is an apocalyptic number.

It is an amenable number.

88799561 is a deficient number, since it is larger than the sum of its proper divisors (421063).

88799561 is a wasteful number, since it uses less digits than its factorization.

88799561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421062.

The product of its digits is 1088640, while the sum is 53.

The square root of 88799561 is about 9423.3518983428. The cubic root of 88799561 is about 446.1390857010.

The spelling of 88799561 in words is "eighty-eight million, seven hundred ninety-nine thousand, five hundred sixty-one".