99666432 has 120 divisors (see below), whose sum is σ = 294918624. Its totient is φ = 32385024.

The previous prime is 99666407. The next prime is 99666443. The reversal of 99666432 is 23466699.

It is a super-2 number, since 2×99666432² = 19866795335221248, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197893 + ... + 198395.

Almost surely, 2^99666432 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 99666432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147459312).

99666432 is an abundant number, since it is smaller than the sum of its proper divisors (195252192).

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

99666432 is a wasteful number, since it uses less digits than its factorization.

99666432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 551 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 99666432 is about 9983.3076683031. The cubic root of 99666432 is about 463.6422132847.

The spelling of 99666432 in words is "ninety-nine million, six hundred sixty-six thousand, four hundred thirty-two".