99766817 has 8 divisors (see below), whose sum is σ = 103934880. Its totient is φ = 95681440.

The previous prime is 99766789. The next prime is 99766861. The reversal of 99766817 is 71866799.

It is a happy number.

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 99766817 - 2⁸ = 99766561 is a prime.

It is a super-2 number, since 2×99766817² = 19906835548622978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99766867) 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, 18203 + ... + 23040.

It is an arithmetic number, because the mean of its divisors is an integer number (12991860).

Almost surely, 2^99766817 is an apocalyptic number.

It is an amenable number.

99766817 is a deficient number, since it is larger than the sum of its proper divisors (4168063).

99766817 is a wasteful number, since it uses less digits than its factorization.

99766817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41343.

The product of its digits is 1143072, while the sum is 53.

The square root of 99766817 is about 9988.3340452750. The cubic root of 99766817 is about 463.7978227020.

The spelling of 99766817 in words is "ninety-nine million, seven hundred sixty-six thousand, eight hundred seventeen".