6790639 has 4 divisors (see below), whose sum is σ = 6795856. Its totient is φ = 6785424.

The previous prime is 6790631. The next prime is 6790649. The reversal of 6790639 is 9360976.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6790639 - 2³ = 6790631 is a prime.

It is a super-2 number, since 2×6790639² = 92225556056642, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6790631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147 + ... + 3859.

It is an arithmetic number, because the mean of its divisors is an integer number (1698964).

Almost surely, 2^6790639 is an apocalyptic number.

6790639 is a deficient number, since it is larger than the sum of its proper divisors (5217).

6790639 is a wasteful number, since it uses less digits than its factorization.

6790639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5216.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 6790639 is about 2605.8854541211. The cubic root of 6790639 is about 189.3666724364.

The spelling of 6790639 in words is "six million, seven hundred ninety thousand, six hundred thirty-nine".