99667700 has 54 divisors (see below), whose sum is σ = 237756918. Its totient is φ = 36238400.

The previous prime is 99667699. The next prime is 99667721. The reversal of 99667700 is 776699.

It can be written as a sum of positive squares in 3 ways, for example, as 9759376 + 89908324 = 3124^2 + 9482^2 .

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7982 + ... + 16218.

Almost surely, 2^99667700 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 99667700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118878459).

99667700 is an abundant number, since it is smaller than the sum of its proper divisors (138089218).

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

99667700 is a wasteful number, since it uses less digits than its factorization.

99667700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8273 (or 8255 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 99667700 is about 9983.3711741075. The cubic root of 99667700 is about 463.6441794961.

The spelling of 99667700 in words is "ninety-nine million, six hundred sixty-seven thousand, seven hundred".