99977700 has 72 divisors (see below), whose sum is σ = 297119872. Its totient is φ = 25937280.

The previous prime is 99977693. The next prime is 99977707. The reversal of 99977700 is 777999.

It is an interprime number because it is at equal distance from previous prime (99977693) and next prime (99977707).

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 99977700.

It is not an unprimeable number, because it can be changed into a prime (99977707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6597 + ... + 15603.

Almost surely, 2^99977700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99977700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148559936).

99977700 is an abundant number, since it is smaller than the sum of its proper divisors (197142172).

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

99977700 is a wasteful number, since it uses less digits than its factorization.

99977700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9061 (or 9054 counting only the distinct ones).

The product of its (nonzero) digits is 250047, while the sum is 48.

The square root of 99977700 is about 9998.8849378318. The cubic root of 99977700 is about 464.1243783193.

The spelling of 99977700 in words is "ninety-nine million, nine hundred seventy-seven thousand, seven hundred".