2722653 has 10 divisors (see below), whose sum is σ = 4067294. Its totient is φ = 1815048.

The previous prime is 2722639. The next prime is 2722661. The reversal of 2722653 is 3562272.

2722653 is a `hidden beast` number, since 2 + 7 + 2 + 2 + 653 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2022084 + 700569 = 1422^2 + 837^2 .

It is not a de Polignac number, because 2722653 - 2¹² = 2718557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 2⁸ + 7² + 2¹⁵ + 2²⁰ + 6⁶ + 5² + 3¹³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2722553) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16726 + ... + 16887.

2^2722653 is an apocalyptic number.

It is an amenable number.

2722653 is a deficient number, since it is larger than the sum of its proper divisors (1344641).

2722653 is an equidigital number, since it uses as much as digits as its factorization.

2722653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33625 (or 33616 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 2722653 is about 1650.0463629850. The cubic root of 2722653 is about 139.6360102558.

It can be divided in two parts, 2722 and 653, that added together give a cube (3375 = 15³).

The spelling of 2722653 in words is "two million, seven hundred twenty-two thousand, six hundred fifty-three".