6401371 has 4 divisors (see below), whose sum is σ = 6557544. Its totient is φ = 6245200.

The previous prime is 6401363. The next prime is 6401377. The reversal of 6401371 is 1731046.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6401371 - 2³ = 6401363 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6401377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78025 + ... + 78106.

It is an arithmetic number, because the mean of its divisors is an integer number (1639386).

Almost surely, 2^6401371 is an apocalyptic number.

6401371 is a deficient number, since it is larger than the sum of its proper divisors (156173).

6401371 is a wasteful number, since it uses less digits than its factorization.

6401371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156172.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 6401371 is about 2530.0930812917. The cubic root of 6401371 is about 185.6768099361.

The spelling of 6401371 in words is "six million, four hundred one thousand, three hundred seventy-one".