99609698 has 16 divisors (see below), whose sum is σ = 162481464. Its totient is φ = 45607680.

The previous prime is 99609691. The next prime is 99609707. The reversal of 99609698 is 89690699.

It can be written as a sum of positive squares in 4 ways, for example, as 99540529 + 69169 = 9977^2 + 263^2 .

It is not an unprimeable number, because it can be changed into a prime (99609691) 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 7 ways as a sum of consecutive naturals, for example, 38333 + ... + 40848.

Almost surely, 2^99609698 is an apocalyptic number.

99609698 is a deficient number, since it is larger than the sum of its proper divisors (62871766).

99609698 is a wasteful number, since it uses less digits than its factorization.

99609698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79237.

The product of its (nonzero) digits is 1889568, while the sum is 56.

The square root of 99609698 is about 9980.4658207921. The cubic root of 99609698 is about 463.5542222078.

The spelling of 99609698 in words is "ninety-nine million, six hundred nine thousand, six hundred ninety-eight".