13772649 has 16 divisors (see below), whose sum is σ = 20680704. Its totient is φ = 8077200.

The previous prime is 13772639. The next prime is 13772677. The reversal of 13772649 is 94627731.

13772649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13772649 - 2⁸ = 13772393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13772639) 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, 5709 + ... + 7754.

It is an arithmetic number, because the mean of its divisors is an integer number (1292544).

Almost surely, 2^13772649 is an apocalyptic number.

It is an amenable number.

13772649 is a deficient number, since it is larger than the sum of its proper divisors (6908055).

13772649 is a wasteful number, since it uses less digits than its factorization.

13772649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13508.

The product of its digits is 63504, while the sum is 39.

The square root of 13772649 is about 3711.1519774862. The cubic root of 13772649 is about 239.7024611412.

The spelling of 13772649 in words is "thirteen million, seven hundred seventy-two thousand, six hundred forty-nine".