99963690 has 32 divisors (see below), whose sum is σ = 240528960. Its totient is φ = 26588544.

The previous prime is 99963683. The next prime is 99963697. The reversal of 99963690 is 9636999.

It is an interprime number because it is at equal distance from previous prime (99963683) and next prime (99963697).

It is a super-2 number, since 2×99963690² = 19985478636832200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99963697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8197 + ... + 16343.

It is an arithmetic number, because the mean of its divisors is an integer number (7516530).

Almost surely, 2^99963690 is an apocalyptic number.

99963690 is an abundant number, since it is smaller than the sum of its proper divisors (140565270).

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

99963690 is a wasteful number, since it uses less digits than its factorization.

99963690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8566.

The product of its (nonzero) digits is 708588, while the sum is 51.

The square root of 99963690 is about 9998.1843351681. The cubic root of 99963690 is about 464.1026978636.

It can be divided in two parts, 9 and 9963690, that added together give a palindrome (9963699).

The spelling of 99963690 in words is "ninety-nine million, nine hundred sixty-three thousand, six hundred ninety".