6396993 has 6 divisors (see below), whose sum is σ = 9240114. Its totient is φ = 4264656.

The previous prime is 6396989. The next prime is 6396997. The reversal of 6396993 is 3996936.

6396993 is a `hidden beast` number, since 639 + 6 + 9 + 9 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (6396989) and next prime (6396997).

It can be written as a sum of positive squares in only one way, i.e., 6290064 + 106929 = 2508^2 + 327^2 .

It is not a de Polignac number, because 6396993 - 2² = 6396989 is a prime.

6396993 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6396997) 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, 355380 + ... + 355397.

It is an arithmetic number, because the mean of its divisors is an integer number (1540019).

Almost surely, 2^6396993 is an apocalyptic number.

It is an amenable number.

6396993 is a deficient number, since it is larger than the sum of its proper divisors (2843121).

6396993 is a wasteful number, since it uses less digits than its factorization.

6396993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710783 (or 710780 counting only the distinct ones).

The product of its digits is 236196, while the sum is 45.

The square root of 6396993 is about 2529.2277477523. The cubic root of 6396993 is about 185.6344711693.

The spelling of 6396993 in words is "six million, three hundred ninety-six thousand, nine hundred ninety-three".