6890401 has 16 divisors (see below), whose sum is σ = 8229888. Its totient is φ = 5644800.

The previous prime is 6890353. The next prime is 6890413. The reversal of 6890401 is 1040986.

6890401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-6890401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6890401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6890101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24381 + ... + 24661.

It is an arithmetic number, because the mean of its divisors is an integer number (514368).

Almost surely, 2^6890401 is an apocalyptic number.

It is an amenable number.

6890401 is a deficient number, since it is larger than the sum of its proper divisors (1339487).

6890401 is a wasteful number, since it uses less digits than its factorization.

6890401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 6890401 is about 2624.9573329866. The cubic root of 6890401 is about 190.2895032578.

The spelling of 6890401 in words is "six million, eight hundred ninety thousand, four hundred one".