99707620 has 12 divisors (see below), whose sum is σ = 209386044. Its totient is φ = 39883040.

The previous prime is 99707617. The next prime is 99707623. The reversal of 99707620 is 2670799.

It is an interprime number because it is at equal distance from previous prime (99707617) and next prime (99707623).

It can be written as a sum of positive squares in 2 ways, for example, as 62473216 + 37234404 = 7904^2 + 6102^2 .

It is not an unprimeable number, because it can be changed into a prime (99707623) 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, 2492671 + ... + 2492710.

It is an arithmetic number, because the mean of its divisors is an integer number (17448837).

Almost surely, 2^99707620 is an apocalyptic number.

It is an amenable number.

99707620 is an abundant number, since it is smaller than the sum of its proper divisors (109678424).

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

99707620 is a wasteful number, since it uses less digits than its factorization.

99707620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4985390 (or 4985388 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 99707620 is about 9985.3702985918. The cubic root of 99707620 is about 463.7060725170.

The spelling of 99707620 in words is "ninety-nine million, seven hundred seven thousand, six hundred twenty".