6401673 has 20 divisors (see below), whose sum is σ = 10127700. Its totient is φ = 4015872.

The previous prime is 6401669. The next prime is 6401687. The reversal of 6401673 is 3761046.

6401673 is a `hidden beast` number, since 640 + 16 + 7 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5774409 + 627264 = 2403^2 + 792^2 .

It is not a de Polignac number, because 6401673 - 2² = 6401669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6401273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 948 + ... + 3701.

It is an arithmetic number, because the mean of its divisors is an integer number (506385).

Almost surely, 2^6401673 is an apocalyptic number.

It is an amenable number.

6401673 is a deficient number, since it is larger than the sum of its proper divisors (3726027).

6401673 is a wasteful number, since it uses less digits than its factorization.

6401673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4678 (or 4669 counting only the distinct ones).

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

The square root of 6401673 is about 2530.1527621865. The cubic root of 6401673 is about 185.6797298061.

The spelling of 6401673 in words is "six million, four hundred one thousand, six hundred seventy-three".