88098561 has 12 divisors (see below), whose sum is σ = 129655188. Its totient is φ = 57623904.

The previous prime is 88098553. The next prime is 88098583. The reversal of 88098561 is 16589088.

88098561 is a `hidden beast` number, since 8 + 80 + 9 + 8 + 561 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 59582961 + 28515600 = 7719^2 + 5340^2 .

It is not a de Polignac number, because 88098561 - 2³ = 88098553 is a prime.

It is a super-2 number, since 2×88098561² = 15522712900541442, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (88098511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91870 + ... + 92823.

It is an arithmetic number, because the mean of its divisors is an integer number (10804599).

Almost surely, 2^88098561 is an apocalyptic number.

It is an amenable number.

88098561 is a deficient number, since it is larger than the sum of its proper divisors (41556627).

88098561 is a wasteful number, since it uses less digits than its factorization.

88098561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184752 (or 184749 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 88098561 is about 9386.0833684770. The cubic root of 88098561 is about 444.9620150214.

The spelling of 88098561 in words is "eighty-eight million, ninety-eight thousand, five hundred sixty-one".