99920663 has 2 divisors, whose sum is σ = 99920664. Its totient is φ = 99920662.

The previous prime is 99920659. The next prime is 99920669. The reversal of 99920663 is 36602999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99920663 - 2² = 99920659 is a prime.

It is a super-3 number, since 3×99920663³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99920669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49960331 + 49960332.

It is an arithmetic number, because the mean of its divisors is an integer number (49960332).

Almost surely, 2^99920663 is an apocalyptic number.

99920663 is a deficient number, since it is larger than the sum of its proper divisors (1).

99920663 is an equidigital number, since it uses as much as digits as its factorization.

99920663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 99920663 is about 9996.0323628928. The cubic root of 99920663 is about 464.0361009738.

The spelling of 99920663 in words is "ninety-nine million, nine hundred twenty thousand, six hundred sixty-three".