6622993 has 8 divisors (see below), whose sum is σ = 7152488. Its totient is φ = 6096384.

The previous prime is 6622981. The next prime is 6622997. The reversal of 6622993 is 3992266.

It can be written as a sum of positive squares in 4 ways, for example, as 186624 + 6436369 = 432^2 + 2537^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6622993 - 2⁵ = 6622961 is a prime.

It is a Duffinian number.

6622993 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6622997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8371 + ... + 9127.

It is an arithmetic number, because the mean of its divisors is an integer number (894061).

Almost surely, 2^6622993 is an apocalyptic number.

It is an amenable number.

6622993 is a deficient number, since it is larger than the sum of its proper divisors (529495).

6622993 is a wasteful number, since it uses less digits than its factorization.

6622993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443.

The product of its digits is 34992, while the sum is 37.

The square root of 6622993 is about 2573.5176315697. The cubic root of 6622993 is about 187.7953200962.

It can be divided in two parts, 662 and 2993, that added together give a triangular number (3655 = T₈₅).

The spelling of 6622993 in words is "six million, six hundred twenty-two thousand, nine hundred ninety-three".