99684645 has 32 divisors (see below), whose sum is σ = 167968512. Its totient is φ = 50383872.

The previous prime is 99684631. The next prime is 99684647. The reversal of 99684645 is 54648699.

It is not a de Polignac number, because 99684645 - 2¹² = 99680549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99684647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37707 + ... + 40263.

It is an arithmetic number, because the mean of its divisors is an integer number (5249016).

Almost surely, 2^99684645 is an apocalyptic number.

It is an amenable number.

99684645 is a deficient number, since it is larger than the sum of its proper divisors (68283867).

99684645 is a wasteful number, since it uses less digits than its factorization.

99684645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2701.

The product of its digits is 1866240, while the sum is 51.

The square root of 99684645 is about 9984.2197992632. The cubic root of 99684645 is about 463.6704534894.

The spelling of 99684645 in words is "ninety-nine million, six hundred eighty-four thousand, six hundred forty-five".