99999560 has 16 divisors (see below), whose sum is σ = 224999100. Its totient is φ = 39999808.

The previous prime is 99999551. The next prime is 99999563. The reversal of 99999560 is 6599999.

It can be written as a sum of positive squares in 2 ways, for example, as 84015556 + 15984004 = 9166^2 + 3998^2 .

It is a junction number, because it is equal to n+sod(n) for n = 99999496 and 99999505.

It is not an unprimeable number, because it can be changed into a prime (99999563) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1249955 + ... + 1250034.

Almost surely, 2^99999560 is an apocalyptic number.

It is an amenable number.

99999560 is an abundant number, since it is smaller than the sum of its proper divisors (124999540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99999560 is a wasteful number, since it uses less digits than its factorization.

99999560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500000 (or 2499996 counting only the distinct ones).

The product of its (nonzero) digits is 1771470, while the sum is 56.

The square root of 99999560 is about 9999.9779999758. The cubic root of 99999560 is about 464.1582025939.

The spelling of 99999560 in words is "ninety-nine million, nine hundred ninety-nine thousand, five hundred sixty".