6722653 has 6 divisors (see below), whose sum is σ = 7820286. Its totient is φ = 5762232.

The previous prime is 6722623. The next prime is 6722657. The reversal of 6722653 is 3562276.

It can be written as a sum of positive squares in only one way, i.e., 6140484 + 582169 = 2478^2 + 763^2 .

It is not a de Polignac number, because 6722653 - 2¹⁷ = 6591581 is a prime.

It is a d-powerful number, because it can be written as 6⁴ + 7⁵ + 2¹⁵ + 2¹⁷ + 6⁸ + 5⁷ + 3¹⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6722657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68550 + ... + 68647.

It is an arithmetic number, because the mean of its divisors is an integer number (1303381).

Almost surely, 2^6722653 is an apocalyptic number.

It is an amenable number.

6722653 is a deficient number, since it is larger than the sum of its proper divisors (1097633).

6722653 is a wasteful number, since it uses less digits than its factorization.

6722653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137211 (or 137204 counting only the distinct ones).

The product of its digits is 15120, while the sum is 31.

The square root of 6722653 is about 2592.8079373529. The cubic root of 6722653 is about 188.7325893623.

The spelling of 6722653 in words is "six million, seven hundred twenty-two thousand, six hundred fifty-three".