99694145 has 8 divisors (see below), whose sum is σ = 119743656. Its totient is φ = 79681536.

The previous prime is 99694123. The next prime is 99694181. The reversal of 99694145 is 54149699.

It can be written as a sum of positive squares in 4 ways, for example, as 3418801 + 96275344 = 1849^2 + 9812^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 99694145 - 2⁸ = 99693889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99694145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2882 + ... + 14411.

It is an arithmetic number, because the mean of its divisors is an integer number (14967957).

Almost surely, 2^99694145 is an apocalyptic number.

99694145 is the 5765-th octagonal number.

It is an amenable number.

99694145 is a deficient number, since it is larger than the sum of its proper divisors (20049511).

99694145 is a wasteful number, since it uses less digits than its factorization.

99694145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18451.

The product of its digits is 349920, while the sum is 47.

The square root of 99694145 is about 9984.6955386732. The cubic root of 99694145 is about 463.6851823689.

The spelling of 99694145 in words is "ninety-nine million, six hundred ninety-four thousand, one hundred forty-five".