13772641 has 4 divisors (see below), whose sum is σ = 13998484. Its totient is φ = 13546800.

The previous prime is 13772639. The next prime is 13772677. The reversal of 13772641 is 14627731.

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 992016 + 12780625 = 996^2 + 3575^2 .

It is a cyclic number.

It is not a de Polignac number, because 13772641 - 2¹ = 13772639 is a prime.

It is a super-2 number, since 2×13772641² = 379371280229762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13772611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112830 + ... + 112951.

It is an arithmetic number, because the mean of its divisors is an integer number (3499621).

Almost surely, 2^13772641 is an apocalyptic number.

It is an amenable number.

13772641 is a deficient number, since it is larger than the sum of its proper divisors (225843).

13772641 is an equidigital number, since it uses as much as digits as its factorization.

13772641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225842.

The product of its digits is 7056, while the sum is 31.

The square root of 13772641 is about 3711.1508996536. The cubic root of 13772641 is about 239.7024147299.

The spelling of 13772641 in words is "thirteen million, seven hundred seventy-two thousand, six hundred forty-one".