99707634 has 72 divisors (see below), whose sum is σ = 237662100. Its totient is φ = 30191616.

The previous prime is 99707623. The next prime is 99707653. The reversal of 99707634 is 43670799.

99707634 is a `hidden beast` number, since 9 + 9 + 7 + 0 + 7 + 634 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 21650409 + 78057225 = 4653^2 + 8835^2 .

It is a super-2 number, since 2×99707634² = 19883224555755912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99707634.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 221842 + ... + 222290.

Almost surely, 2^99707634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99707634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118831050).

99707634 is an abundant number, since it is smaller than the sum of its proper divisors (137954466).

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

99707634 is a wasteful number, since it uses less digits than its factorization.

99707634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 99707634 is about 9985.3709996174. The cubic root of 99707634 is about 463.7060942200.

The spelling of 99707634 in words is "ninety-nine million, seven hundred seven thousand, six hundred thirty-four".