99656603 has 2 divisors, whose sum is σ = 99656604. Its totient is φ = 99656602.

The previous prime is 99656573. The next prime is 99656647. The reversal of 99656603 is 30665699.

It is an a-pointer prime, because the next prime (99656647) can be obtained adding 99656603 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99656603 - 2¹⁰ = 99655579 is a prime.

It is not a weakly prime, because it can be changed into another prime (99656003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49828301 + 49828302.

It is an arithmetic number, because the mean of its divisors is an integer number (49828302).

Almost surely, 2^99656603 is an apocalyptic number.

99656603 is a deficient number, since it is larger than the sum of its proper divisors (1).

99656603 is an equidigital number, since it uses as much as digits as its factorization.

99656603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 262440, while the sum is 44.

The square root of 99656603 is about 9982.8153844494. The cubic root of 99656603 is about 463.6269714791.

The spelling of 99656603 in words is "ninety-nine million, six hundred fifty-six thousand, six hundred three".