6722145 has 12 divisors (see below), whose sum is σ = 11651796. Its totient is φ = 3585120.

The previous prime is 6722137. The next prime is 6722153. The reversal of 6722145 is 5412276.

It is an interprime number because it is at equal distance from previous prime (6722137) and next prime (6722153).

It can be written as a sum of positive squares in 2 ways, for example, as 4875264 + 1846881 = 2208^2 + 1359^2 .

It is not a de Polignac number, because 6722145 - 2³ = 6722137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74646 + ... + 74735.

It is an arithmetic number, because the mean of its divisors is an integer number (970983).

Almost surely, 2^6722145 is an apocalyptic number.

It is an amenable number.

6722145 is a deficient number, since it is larger than the sum of its proper divisors (4929651).

6722145 is a wasteful number, since it uses less digits than its factorization.

6722145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149392 (or 149389 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 6722145 is about 2592.7099722105. The cubic root of 6722145 is about 188.7278353577.

The spelling of 6722145 in words is "six million, seven hundred twenty-two thousand, one hundred forty-five".