99966996 has 36 divisors (see below), whose sum is σ = 253136884. Its totient is φ = 33264000.

The previous prime is 99966991. The next prime is 99967001. The reversal of 99966996 is 69966999.

It is an interprime number because it is at equal distance from previous prime (99966991) and next prime (99967001).

It can be written as a sum of positive squares in 2 ways, for example, as 38564100 + 61402896 = 6210^2 + 7836^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99966991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21696 + ... + 25896.

Almost surely, 2^99966996 is an apocalyptic number.

It is an amenable number.

99966996 is an abundant number, since it is smaller than the sum of its proper divisors (153169888).

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

99966996 is a wasteful number, since it uses less digits than its factorization.

99966996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872 (or 4867 counting only the distinct ones).

The product of its digits is 12754584, while the sum is 63.

The square root of 99966996 is about 9998.3496638195. The cubic root of 99966996 is about 464.1078140766.

The spelling of 99966996 in words is "ninety-nine million, nine hundred sixty-six thousand, nine hundred ninety-six".