99603645 has 16 divisors (see below), whose sum is σ = 159494400. Its totient is φ = 53079104.

The previous prime is 99603641. The next prime is 99603649. The reversal of 99603645 is 54630699.

It is an interprime number because it is at equal distance from previous prime (99603641) and next prime (99603649).

It is a cyclic number.

It is not a de Polignac number, because 99603645 - 2² = 99603641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99603597 and 99603606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99603641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27532 + ... + 30938.

It is an arithmetic number, because the mean of its divisors is an integer number (9968400).

Almost surely, 2^99603645 is an apocalyptic number.

It is an amenable number.

99603645 is a deficient number, since it is larger than the sum of its proper divisors (59890755).

99603645 is a wasteful number, since it uses less digits than its factorization.

99603645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5364.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 99603645 is about 9980.1625738261. The cubic root of 99603645 is about 463.5448323907.

The spelling of 99603645 in words is "ninety-nine million, six hundred three thousand, six hundred forty-five".