13772657 has 4 divisors (see below), whose sum is σ = 13855296. Its totient is φ = 13690020.

The previous prime is 13772639. The next prime is 13772677. The reversal of 13772657 is 75627731.

13772657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75627731 = 643 ⋅117617.

It is a cyclic number.

It is not a de Polignac number, because 13772657 - 2¹⁰ = 13771633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13772657.

It is not an unprimeable number, because it can be changed into a prime (13772677) 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, 41069 + ... + 41402.

It is an arithmetic number, because the mean of its divisors is an integer number (3463824).

Almost surely, 2^13772657 is an apocalyptic number.

It is an amenable number.

13772657 is a deficient number, since it is larger than the sum of its proper divisors (82639).

13772657 is an equidigital number, since it uses as much as digits as its factorization.

13772657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82638.

The product of its digits is 61740, while the sum is 38.

The square root of 13772657 is about 3711.1530553185. The cubic root of 13772657 is about 239.7025075525.

The spelling of 13772657 in words is "thirteen million, seven hundred seventy-two thousand, six hundred fifty-seven".