6522993 has 6 divisors (see below), whose sum is σ = 9422114. Its totient is φ = 4348656.

The previous prime is 6522979. The next prime is 6523001. The reversal of 6522993 is 3992256.

It can be written as a sum of positive squares in only one way, i.e., 6517809 + 5184 = 2553^2 + 72^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6522993 is a prime.

It is a Duffinian number.

6522993 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6522953) 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, 362380 + ... + 362397.

Almost surely, 2^6522993 is an apocalyptic number.

It is an amenable number.

6522993 is a deficient number, since it is larger than the sum of its proper divisors (2899121).

6522993 is a wasteful number, since it uses less digits than its factorization.

6522993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724783 (or 724780 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 6522993 is about 2554.0150743486. The cubic root of 6522993 is about 186.8453543350.

The spelling of 6522993 in words is "six million, five hundred twenty-two thousand, nine hundred ninety-three".