13099765 has 16 divisors (see below), whose sum is σ = 18747648. Its totient is φ = 8591616.

The previous prime is 13099727. The next prime is 13099771. The reversal of 13099765 is 56799031.

It is a cyclic number.

It is not a de Polignac number, because 13099765 - 2⁹ = 13099253 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 7332 + ... + 8941.

It is an arithmetic number, because the mean of its divisors is an integer number (1171728).

Almost surely, 2^13099765 is an apocalyptic number.

It is an amenable number.

13099765 is a deficient number, since it is larger than the sum of its proper divisors (5647883).

13099765 is a wasteful number, since it uses less digits than its factorization.

13099765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16308.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 13099765 is about 3619.3597500110. The cubic root of 13099765 is about 235.7334261426.

The spelling of 13099765 in words is "thirteen million, ninety-nine thousand, seven hundred sixty-five".