13694861 has 4 divisors (see below), whose sum is σ = 14028924. Its totient is φ = 13360800.

The previous prime is 13694831. The next prime is 13694881. The reversal of 13694861 is 16849631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2175625 + 11519236 = 1475^2 + 3394^2 .

It is a cyclic number.

It is not a de Polignac number, because 13694861 - 2⁶ = 13694797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13694831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166970 + ... + 167051.

It is an arithmetic number, because the mean of its divisors is an integer number (3507231).

Almost surely, 2^13694861 is an apocalyptic number.

It is an amenable number.

13694861 is a deficient number, since it is larger than the sum of its proper divisors (334063).

13694861 is an equidigital number, since it uses as much as digits as its factorization.

13694861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334062.

The product of its digits is 31104, while the sum is 38.

The square root of 13694861 is about 3700.6568335905. The cubic root of 13694861 is about 239.2503285654.

It can be divided in two parts, 136948 and 61, that multiplied together give a triangular number (8353828 = T₄₀₈₇).

The spelling of 13694861 in words is "thirteen million, six hundred ninety-four thousand, eight hundred sixty-one".