6403671 has 8 divisors (see below), whose sum is σ = 9486960. Its totient is φ = 4269096.

The previous prime is 6403651. The next prime is 6403681. The reversal of 6403671 is 1763046.

It is not a de Polignac number, because 6403671 - 2¹⁹ = 5879383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 237173 = 6403671 / (6 + 4 + 0 + 3 + 6 + 7 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6403601) 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 7 ways as a sum of consecutive naturals, for example, 118560 + ... + 118613.

It is an arithmetic number, because the mean of its divisors is an integer number (1185870).

Almost surely, 2^6403671 is an apocalyptic number.

6403671 is a deficient number, since it is larger than the sum of its proper divisors (3083289).

6403671 is a wasteful number, since it uses less digits than its factorization.

6403671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237182 (or 237176 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 6403671 is about 2530.5475692032. The cubic root of 6403671 is about 185.6990450440.

The spelling of 6403671 in words is "six million, four hundred three thousand, six hundred seventy-one".