99709570 has 16 divisors (see below), whose sum is σ = 179687160. Its totient is φ = 39837184.

The previous prime is 99709567. The next prime is 99709579. The reversal of 99709570 is 7590799.

It can be written as a sum of positive squares in 4 ways, for example, as 25938649 + 73770921 = 5093^2 + 8589^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 99709570.

It is not an unprimeable number, because it can be changed into a prime (99709579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3924 + ... + 14656.

Almost surely, 2^99709570 is an apocalyptic number.

99709570 is a deficient number, since it is larger than the sum of its proper divisors (79977590).

99709570 is a wasteful number, since it uses less digits than its factorization.

99709570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11669.

The product of its (nonzero) digits is 178605, while the sum is 46.

The square root of 99709570 is about 9985.4679409630. The cubic root of 99709570 is about 463.7090954252.

The spelling of 99709570 in words is "ninety-nine million, seven hundred nine thousand, five hundred seventy".