99321685 has 8 divisors (see below), whose sum is σ = 119485656. Its totient is φ = 79257600.

The previous prime is 99321647. The next prime is 99321707. The reversal of 99321685 is 58612399.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 35976004 + 63345681 = 5998^2 + 7959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99321685 - 2²³ = 90933077 is a prime.

It is a super-2 number, since 2×99321685² = 19729594222478450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22764 + ... + 26773.

It is an arithmetic number, because the mean of its divisors is an integer number (14935707).

Almost surely, 2^99321685 is an apocalyptic number.

It is an amenable number.

99321685 is a deficient number, since it is larger than the sum of its proper divisors (20163971).

99321685 is a wasteful number, since it uses less digits than its factorization.

99321685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49943.

The product of its digits is 116640, while the sum is 43.

The square root of 99321685 is about 9966.0265402015. The cubic root of 99321685 is about 463.1070149939.

The spelling of 99321685 in words is "ninety-nine million, three hundred twenty-one thousand, six hundred eighty-five".