99661766 has 8 divisors (see below), whose sum is σ = 149584584. Its totient is φ = 49800240.

The previous prime is 99661753. The next prime is 99661799. The reversal of 99661766 is 66716699.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11015 + ... + 17906.

It is an arithmetic number, because the mean of its divisors is an integer number (18698073).

Almost surely, 2^99661766 is an apocalyptic number.

99661766 is a deficient number, since it is larger than the sum of its proper divisors (49922818).

99661766 is a wasteful number, since it uses less digits than its factorization.

99661766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30646.

The product of its digits is 734832, while the sum is 50.

The square root of 99661766 is about 9983.0739754847. The cubic root of 99661766 is about 463.6349778552.

The spelling of 99661766 in words is "ninety-nine million, six hundred sixty-one thousand, seven hundred sixty-six".