99757866 has 64 divisors (see below), whose sum is σ = 229178880. Its totient is φ = 28693440.

The previous prime is 99757859. The next prime is 99757871. The reversal of 99757866 is 66875799.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122601 + ... + 123411.

It is an arithmetic number, because the mean of its divisors is an integer number (3580920).

Almost surely, 2^99757866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99757866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114589440).

99757866 is an abundant number, since it is smaller than the sum of its proper divisors (129421014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99757866 is a wasteful number, since it uses less digits than its factorization.

99757866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931.

The product of its digits is 5715360, while the sum is 57.

The square root of 99757866 is about 9987.8859625048. The cubic root of 99757866 is about 463.7839517624.

The spelling of 99757866 in words is "ninety-nine million, seven hundred fifty-seven thousand, eight hundred sixty-six".