9899800662 has 16 divisors (see below), whose sum is σ = 19801179072. Its totient is φ = 3299670600.

The previous prime is 9899800639. The next prime is 9899800663. The reversal of 9899800662 is 2660089989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9899800663) 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, 25593 + ... + 143019.

It is an arithmetic number, because the mean of its divisors is an integer number (1237573692).

Almost surely, 2^9899800662 is an apocalyptic number.

9899800662 is an abundant number, since it is smaller than the sum of its proper divisors (9901378410).

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

9899800662 is a wasteful number, since it uses less digits than its factorization.

9899800662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131483.

The product of its (nonzero) digits is 3359232, while the sum is 57.

The square root of 9899800662 is about 99497.7419944795. The cubic root of 9899800662 is about 2147.2147573273.

The spelling of 9899800662 in words is "nine billion, eight hundred ninety-nine million, eight hundred thousand, six hundred sixty-two".