6422993 has 2 divisors, whose sum is σ = 6422994. Its totient is φ = 6422992.

The previous prime is 6422989. The next prime is 6423013. The reversal of 6422993 is 3992246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5914624 + 508369 = 2432^2 + 713^2 .

It is a cyclic number.

It is not a de Polignac number, because 6422993 - 2² = 6422989 is a prime.

It is not a weakly prime, because it can be changed into another prime (6422903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3211496 + 3211497.

It is an arithmetic number, because the mean of its divisors is an integer number (3211497).

Almost surely, 2^6422993 is an apocalyptic number.

It is an amenable number.

6422993 is a deficient number, since it is larger than the sum of its proper divisors (1).

6422993 is an equidigital number, since it uses as much as digits as its factorization.

6422993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 6422993 is about 2534.3624444818. The cubic root of 6422993 is about 185.8856293839.

The spelling of 6422993 in words is "six million, four hundred twenty-two thousand, nine hundred ninety-three".