99603649 has 2 divisors, whose sum is σ = 99603650. Its totient is φ = 99603648.

The previous prime is 99603641. The next prime is 99603653. The reversal of 99603649 is 94630699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99600400 + 3249 = 9980^2 + 57^2 .

It is a cyclic number.

It is not a de Polignac number, because 99603649 - 2³ = 99603641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99603599 and 99603608.

It is not a weakly prime, because it can be changed into another prime (99603641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49801824 + 49801825.

It is an arithmetic number, because the mean of its divisors is an integer number (49801825).

Almost surely, 2^99603649 is an apocalyptic number.

It is an amenable number.

99603649 is a deficient number, since it is larger than the sum of its proper divisors (1).

99603649 is an equidigital number, since it uses as much as digits as its factorization.

99603649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 99603649 is about 9980.1627742237. The cubic root of 99603649 is about 463.5448385959.

The spelling of 99603649 in words is "ninety-nine million, six hundred three thousand, six hundred forty-nine".