99966632 has 8 divisors (see below), whose sum is σ = 187437450. Its totient is φ = 49983312.

The previous prime is 99966631. The next prime is 99966673. The reversal of 99966632 is 23666999.

It can be written as a sum of positive squares in only one way, i.e., 89378116 + 10588516 = 9454^2 + 3254^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (99966631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6247907 + ... + 6247922.

Almost surely, 2^99966632 is an apocalyptic number.

It is an amenable number.

99966632 is a deficient number, since it is larger than the sum of its proper divisors (87470818).

99966632 is a wasteful number, since it uses less digits than its factorization.

99966632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12495835 (or 12495831 counting only the distinct ones).

The product of its digits is 944784, while the sum is 50.

The square root of 99966632 is about 9998.3314607988. The cubic root of 99966632 is about 464.1072507725.

It can be divided in two parts, 9996663 and 2, that multiplied together give a triangular number (19993326 = T₆₃₂₃).

The spelling of 99966632 in words is "ninety-nine million, nine hundred sixty-six thousand, six hundred thirty-two".