99776666 has 8 divisors (see below), whose sum is σ = 163270944. Its totient is φ = 45353020.

The previous prime is 99776659. The next prime is 99776669. The reversal of 99776666 is 66667799.

It is a happy number.

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

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (99776669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2267630 + ... + 2267673.

It is an arithmetic number, because the mean of its divisors is an integer number (20408868).

Almost surely, 2^99776666 is an apocalyptic number.

99776666 is a deficient number, since it is larger than the sum of its proper divisors (63494278).

99776666 is a wasteful number, since it uses less digits than its factorization.

99776666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4535316.

The product of its digits is 5143824, while the sum is 56.

The square root of 99776666 is about 9988.8270582687. The cubic root of 99776666 is about 463.8130842709.

The spelling of 99776666 in words is "ninety-nine million, seven hundred seventy-six thousand, six hundred sixty-six".