99680465 has 4 divisors (see below), whose sum is σ = 119616564. Its totient is φ = 79744368.

The previous prime is 99680461. The next prime is 99680473. The reversal of 99680465 is 56408699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56408699 = 109 ⋅517511.

It can be written as a sum of positive squares in 2 ways, for example, as 44742721 + 54937744 = 6689^2 + 7412^2 .

It is a cyclic number.

It is not a de Polignac number, because 99680465 - 2² = 99680461 is a prime.

It is a super-3 number, since 3×99680465³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99680461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9968042 + ... + 9968051.

It is an arithmetic number, because the mean of its divisors is an integer number (29904141).

Almost surely, 2^99680465 is an apocalyptic number.

It is an amenable number.

99680465 is a deficient number, since it is larger than the sum of its proper divisors (19936099).

99680465 is a wasteful number, since it uses less digits than its factorization.

99680465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19936098.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 99680465 is about 9984.0104667413. The cubic root of 99680465 is about 463.6639724859.

The spelling of 99680465 in words is "ninety-nine million, six hundred eighty thousand, four hundred sixty-five".