6786401 has 4 divisors (see below), whose sum is σ = 7143600. Its totient is φ = 6429204.

The previous prime is 6786391. The next prime is 6786407. The reversal of 6786401 is 1046876.

6786401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6786401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6786407) 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, 178571 + ... + 178608.

It is an arithmetic number, because the mean of its divisors is an integer number (1785900).

Almost surely, 2^6786401 is an apocalyptic number.

It is an amenable number.

6786401 is a deficient number, since it is larger than the sum of its proper divisors (357199).

6786401 is a wasteful number, since it uses less digits than its factorization.

6786401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357198.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 6786401 is about 2605.0721679063. The cubic root of 6786401 is about 189.3272700096.

It can be divided in two parts, 67 and 86401, that added together give a palindrome (86468).

The spelling of 6786401 in words is "six million, seven hundred eighty-six thousand, four hundred one".