99955663 has 8 divisors (see below), whose sum is σ = 105925680. Its totient is φ = 94153920.

The previous prime is 99955651. The next prime is 99955673. The reversal of 99955663 is 36655999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99955663 - 2⁹ = 99955151 is a prime.

It is a super-2 number, since 2×99955663² = 19982269131539138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99955663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99955613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40845 + ... + 43222.

It is an arithmetic number, because the mean of its divisors is an integer number (13240710).

Almost surely, 2^99955663 is an apocalyptic number.

99955663 is a deficient number, since it is larger than the sum of its proper divisors (5970017).

99955663 is a wasteful number, since it uses less digits than its factorization.

99955663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84137.

The product of its digits is 1968300, while the sum is 52.

The square root of 99955663 is about 9997.7829042243. The cubic root of 99955663 is about 464.0902751793.

The spelling of 99955663 in words is "ninety-nine million, nine hundred fifty-five thousand, six hundred sixty-three".