99963666 has 48 divisors (see below), whose sum is σ = 244188000. Its totient is φ = 30290040.

The previous prime is 99963659. The next prime is 99963673. The reversal of 99963666 is 66636999.

It is an interprime number because it is at equal distance from previous prime (99963659) and next prime (99963673).

It is a Harshad number since it is a multiple of its sum of digits (54).

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1116 + ... + 14183.

It is an arithmetic number, because the mean of its divisors is an integer number (5087250).

Almost surely, 2^99963666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99963666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122094000).

99963666 is an abundant number, since it is smaller than the sum of its proper divisors (144224334).

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

99963666 is a wasteful number, since it uses less digits than its factorization.

99963666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15332 (or 15315 counting only the distinct ones).

The product of its digits is 2834352, while the sum is 54.

The square root of 99963666 is about 9998.1831349501. The cubic root of 99963666 is about 464.1026607219.

The spelling of 99963666 in words is "ninety-nine million, nine hundred sixty-three thousand, six hundred sixty-six".