13991695 has 16 divisors (see below), whose sum is σ = 18247680. Its totient is φ = 10260000.

The previous prime is 13991693. The next prime is 13991699. The reversal of 13991695 is 59619931.

It is not a de Polignac number, because 13991695 - 2¹ = 13991693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13991693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570 + ... + 5320.

It is an arithmetic number, because the mean of its divisors is an integer number (1140480).

Almost surely, 2^13991695 is an apocalyptic number.

13991695 is a deficient number, since it is larger than the sum of its proper divisors (4255985).

13991695 is a wasteful number, since it uses less digits than its factorization.

13991695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4806.

The product of its digits is 65610, while the sum is 43.

The square root of 13991695 is about 3740.5474198304. The cubic root of 13991695 is about 240.9665592966.

The spelling of 13991695 in words is "thirteen million, nine hundred ninety-one thousand, six hundred ninety-five".