999763200 has 324 divisors, whose sum is σ = 3788343468. Its totient is φ = 250675200.

The previous prime is 999763187. The next prime is 999763207. The reversal of 999763200 is 2367999.

999763200 is a `hidden beast` number, since 9 + 9 + 9 + 7 + 632 + 0 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 2214144 + 997549056 = 1488^2 + 31584^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999763207) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 978690 + ... + 979710.

Almost surely, 2^999763200 is an apocalyptic number.

999763200 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999763200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1894171734).

999763200 is an abundant number, since it is smaller than the sum of its proper divisors (2788580268).

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

999763200 is a wasteful number, since it uses less digits than its factorization.

999763200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070 (or 1048 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 999763200 is about 31619.0322432550. The cubic root of 999763200 is about 999.9210604354.

The spelling of 999763200 in words is "nine hundred ninety-nine million, seven hundred sixty-three thousand, two hundred".