13766397 has 16 divisors (see below), whose sum is σ = 19312128. Its totient is φ = 8705840.

The previous prime is 13766381. The next prime is 13766429. The reversal of 13766397 is 79366731.

It is a cyclic number.

It is not a de Polignac number, because 13766397 - 2⁴ = 13766381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13766327) 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, 8278 + ... + 9800.

It is an arithmetic number, because the mean of its divisors is an integer number (1207008).

Almost surely, 2^13766397 is an apocalyptic number.

It is an amenable number.

13766397 is a deficient number, since it is larger than the sum of its proper divisors (5545731).

13766397 is a wasteful number, since it uses less digits than its factorization.

13766397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680.

The product of its digits is 142884, while the sum is 42.

The square root of 13766397 is about 3710.3095558188. The cubic root of 13766397 is about 239.6661852195. Note that the first 3 decimals are identical.

The spelling of 13766397 in words is "thirteen million, seven hundred sixty-six thousand, three hundred ninety-seven".