6820426 has 8 divisors (see below), whose sum is σ = 10345860. Its totient is φ = 3371808.

The previous prime is 6820421. The next prime is 6820433. The reversal of 6820426 is 6240286.

It can be written as a sum of positive squares in 2 ways, for example, as 6765201 + 55225 = 2601^2 + 235^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 6820394 and 6820403.

It is not an unprimeable number, because it can be changed into a prime (6820421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18981 + ... + 19336.

Almost surely, 2^6820426 is an apocalyptic number.

6820426 is a deficient number, since it is larger than the sum of its proper divisors (3525434).

6820426 is a wasteful number, since it uses less digits than its factorization.

6820426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38408.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 6820426 is about 2611.5945320819. The cubic root of 6820426 is about 189.6431529246.

The spelling of 6820426 in words is "six million, eight hundred twenty thousand, four hundred twenty-six".