10686399 has 8 divisors (see below), whose sum is σ = 14263680. Its totient is φ = 7116696.

The previous prime is 10686391. The next prime is 10686419. The reversal of 10686399 is 99368601.

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

It is not a de Polignac number, because 10686399 - 2³ = 10686391 is a prime.

It is a super-2 number, since 2×10686399² = 228398247174402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10686399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10686391) 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, 4222 + ... + 6260.

It is an arithmetic number, because the mean of its divisors is an integer number (1782960).

Almost surely, 2^10686399 is an apocalyptic number.

10686399 is a deficient number, since it is larger than the sum of its proper divisors (3577281).

10686399 is a wasteful number, since it uses less digits than its factorization.

10686399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 10686399 is about 3269.0058121698. The cubic root of 10686399 is about 220.2641386631.

The spelling of 10686399 in words is "ten million, six hundred eighty-six thousand, three hundred ninety-nine".