13772645 has 16 divisors (see below), whose sum is σ = 17072640. Its totient is φ = 10660224.

The previous prime is 13772639. The next prime is 13772677. The reversal of 13772645 is 54627731.

13772645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13772645 - 2⁶ = 13772581 is a prime.

It is a Curzon 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, 23921 + ... + 24489.

It is an arithmetic number, because the mean of its divisors is an integer number (1067040).

Almost surely, 2^13772645 is an apocalyptic number.

It is an amenable number.

13772645 is a deficient number, since it is larger than the sum of its proper divisors (3299995).

13772645 is a wasteful number, since it uses less digits than its factorization.

13772645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724.

The product of its digits is 35280, while the sum is 35.

The square root of 13772645 is about 3711.1514385700. The cubic root of 13772645 is about 239.7024379355.

The spelling of 13772645 in words is "thirteen million, seven hundred seventy-two thousand, six hundred forty-five".