99995570 has 16 divisors (see below), whose sum is σ = 180107928. Its totient is φ = 39972480.

The previous prime is 99995569. The next prime is 99995573. The reversal of 99995570 is 7559999.

It can be written as a sum of positive squares in 4 ways, for example, as 99341089 + 654481 = 9967^2 + 809^2 .

It is a super-2 number, since 2×99995570² = 19998228039249800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99995573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24260 + ... + 28080.

Almost surely, 2^99995570 is an apocalyptic number.

99995570 is a deficient number, since it is larger than the sum of its proper divisors (80112358).

99995570 is a wasteful number, since it uses less digits than its factorization.

99995570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6445.

The product of its (nonzero) digits is 1148175, while the sum is 53.

The square root of 99995570 is about 9999.7784975468. The cubic root of 99995570 is about 464.1520291806.

It can be divided in two parts, 999 and 95570, that added together give a palindrome (96569).

The spelling of 99995570 in words is "ninety-nine million, nine hundred ninety-five thousand, five hundred seventy".