6722553 has 4 divisors (see below), whose sum is σ = 8963408. Its totient is φ = 4481700.

The previous prime is 6722549. The next prime is 6722557. The reversal of 6722553 is 3552276.

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.

It is an interprime number because it is at equal distance from previous prime (6722549) and next prime (6722557).

It is not a de Polignac number, because 6722553 - 2² = 6722549 is a prime.

It is a D-number.

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 6722553.

It is not an unprimeable number, because it can be changed into a prime (6722557) 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, 1120423 + ... + 1120428.

It is an arithmetic number, because the mean of its divisors is an integer number (2240852).

Almost surely, 2^6722553 is an apocalyptic number.

It is an amenable number.

6722553 is a deficient number, since it is larger than the sum of its proper divisors (2240855).

6722553 is a wasteful number, since it uses less digits than its factorization.

6722553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240854.

The product of its digits is 12600, while the sum is 30.

The square root of 6722553 is about 2592.7886531686. The cubic root of 6722553 is about 188.7316535535.

The spelling of 6722553 in words is "six million, seven hundred twenty-two thousand, five hundred fifty-three".