13806975 has 108 divisors (see below), whose sum is σ = 30378264. Its totient is φ = 5483520.

The previous prime is 13806973. The next prime is 13806979. The reversal of 13806975 is 57960831.

It is not a de Polignac number, because 13806975 - 2¹ = 13806973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13806971) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 812167 + ... + 812183.

Almost surely, 2^13806975 is an apocalyptic number.

13806975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13806975 is an abundant number, since it is smaller than the sum of its proper divisors (16571289).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13806975 is a wasteful number, since it uses less digits than its factorization.

13806975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 13806975 is about 3715.7738090470. The cubic root of 13806975 is about 239.9014352208.

Multiplying 13806975 by its sum of digits (39), we get a square (538472025 = 23205²).

13806975 divided by its sum of digits (39) gives a square (354025 = 595²).

The spelling of 13806975 in words is "thirteen million, eight hundred six thousand, nine hundred seventy-five".