99634693 has 4 divisors (see below), whose sum is σ = 99886060. Its totient is φ = 99383328.

The previous prime is 99634669. The next prime is 99634709. The reversal of 99634693 is 39643699.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37429924 + 62204769 = 6118^2 + 7887^2 .

It is a cyclic number.

It is not a de Polignac number, because 99634693 - 2²¹ = 97537541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99634663) 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, 125088 + ... + 125881.

It is an arithmetic number, because the mean of its divisors is an integer number (24971515).

Almost surely, 2^99634693 is an apocalyptic number.

It is an amenable number.

99634693 is a deficient number, since it is larger than the sum of its proper divisors (251367).

99634693 is a wasteful number, since it uses less digits than its factorization.

99634693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251366.

The product of its digits is 944784, while the sum is 49.

The square root of 99634693 is about 9981.7179383110. The cubic root of 99634693 is about 463.5929920900.

The spelling of 99634693 in words is "ninety-nine million, six hundred thirty-four thousand, six hundred ninety-three".