6404971 has 8 divisors (see below), whose sum is σ = 7077024. Its totient is φ = 5765760.

The previous prime is 6404929. The next prime is 6404987. The reversal of 6404971 is 1794046.

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

It is a cyclic number.

It is not a de Polignac number, because 6404971 - 2¹¹ = 6402923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6404921) 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, 7800 + ... + 8581.

It is an arithmetic number, because the mean of its divisors is an integer number (884628).

Almost surely, 2^6404971 is an apocalyptic number.

6404971 is a deficient number, since it is larger than the sum of its proper divisors (672053).

6404971 is a wasteful number, since it uses less digits than its factorization.

6404971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16421.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 6404971 is about 2530.8044175716. The cubic root of 6404971 is about 185.7116103588.

The spelling of 6404971 in words is "six million, four hundred four thousand, nine hundred seventy-one".