99966655 has 8 divisors (see below), whose sum is σ = 120564000. Its totient is φ = 79570656.

The previous prime is 99966631. The next prime is 99966673. The reversal of 99966655 is 55666999.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99966655 is a prime.

It is a super-2 number, since 2×99966655² = 19986664223778050, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99966596 and 99966605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49240 + ... + 51229.

It is an arithmetic number, because the mean of its divisors is an integer number (15070500).

Almost surely, 2^99966655 is an apocalyptic number.

99966655 is a deficient number, since it is larger than the sum of its proper divisors (20597345).

99966655 is a wasteful number, since it uses less digits than its factorization.

99966655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100673.

The product of its digits is 3936600, while the sum is 55.

The square root of 99966655 is about 9998.3326109907. The cubic root of 99966655 is about 464.1072863660.

The spelling of 99966655 in words is "ninety-nine million, nine hundred sixty-six thousand, six hundred fifty-five".