99687319 has 8 divisors (see below), whose sum is σ = 105470640. Its totient is φ = 93957696.

The previous prime is 99687317. The next prime is 99687323. The reversal of 99687319 is 91378699.

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 99687319 - 2¹ = 99687317 is a prime.

It is a super-2 number, since 2×99687319² = 19875123138815522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99687317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9574 + ... + 17059.

It is an arithmetic number, because the mean of its divisors is an integer number (13183830).

Almost surely, 2^99687319 is an apocalyptic number.

99687319 is a deficient number, since it is larger than the sum of its proper divisors (5783321).

99687319 is a wasteful number, since it uses less digits than its factorization.

99687319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26849.

The product of its digits is 734832, while the sum is 52.

The square root of 99687319 is about 9984.3537096800. The cubic root of 99687319 is about 463.6745993760.

The spelling of 99687319 in words is "ninety-nine million, six hundred eighty-seven thousand, three hundred nineteen".