6401811 has 8 divisors (see below), whose sum is σ = 9192400. Its totient is φ = 3939552.

The previous prime is 6401771. The next prime is 6401827. The reversal of 6401811 is 1181046.

6401811 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6401811 - 2¹³ = 6393619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6401831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82036 + ... + 82113.

It is an arithmetic number, because the mean of its divisors is an integer number (1149050).

Almost surely, 2^6401811 is an apocalyptic number.

6401811 is a deficient number, since it is larger than the sum of its proper divisors (2790589).

6401811 is a wasteful number, since it uses less digits than its factorization.

6401811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164165.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 6401811 is about 2530.1800331202. The cubic root of 6401811 is about 185.6810640208.

Adding to 6401811 its reverse (1181046), we get a palindrome (7582857).

The spelling of 6401811 in words is "six million, four hundred one thousand, eight hundred eleven".