99720603 has 6 divisors (see below), whose sum is σ = 144040884. Its totient is φ = 66480396.

The previous prime is 99720581. The next prime is 99720619. The reversal of 99720603 is 30602799.

It is not a de Polignac number, because 99720603 - 2⁸ = 99720347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99720653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5540025 + ... + 5540042.

It is an arithmetic number, because the mean of its divisors is an integer number (24006814).

Almost surely, 2^99720603 is an apocalyptic number.

99720603 is a deficient number, since it is larger than the sum of its proper divisors (44320281).

99720603 is a wasteful number, since it uses less digits than its factorization.

99720603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11080073 (or 11080070 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 99720603 is about 9986.0203785091. The cubic root of 99720603 is about 463.7261981424.

The spelling of 99720603 in words is "ninety-nine million, seven hundred twenty thousand, six hundred three".