99963684 has 18 divisors (see below), whose sum is σ = 252686070. Its totient is φ = 33321216.

The previous prime is 99963683. The next prime is 99963697. The reversal of 99963684 is 48636999.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 90782784 + 9180900 = 9528^2 + 3030^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 99963684.

It is not an unprimeable number, because it can be changed into a prime (99963683) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1388349 + ... + 1388420.

It is an arithmetic number, because the mean of its divisors is an integer number (14038115).

Almost surely, 2^99963684 is an apocalyptic number.

It is an amenable number.

99963684 is an abundant number, since it is smaller than the sum of its proper divisors (152722386).

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

99963684 is a wasteful number, since it uses less digits than its factorization.

99963684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776779 (or 2776774 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The square root of 99963684 is about 9998.1840351136. The cubic root of 99963684 is about 464.1026885781.

The spelling of 99963684 in words is "ninety-nine million, nine hundred sixty-three thousand, six hundred eighty-four".