6404719 has 2 divisors, whose sum is σ = 6404720. Its totient is φ = 6404718.

The previous prime is 6404711. The next prime is 6404743. The reversal of 6404719 is 9174046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6404719 - 2³ = 6404711 is a prime.

It is a super-2 number, since 2×6404719² = 82040850937922, which contains 22 as substring.

It is equal to p₄₃₈₇₀₉ and since 6404719 and 438709 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6404711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3202359 + 3202360.

It is an arithmetic number, because the mean of its divisors is an integer number (3202360).

Almost surely, 2^6404719 is an apocalyptic number.

6404719 is a deficient number, since it is larger than the sum of its proper divisors (1).

6404719 is an equidigital number, since it uses as much as digits as its factorization.

6404719 is an evil number, because the sum of its binary digits is even.

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

The square root of 6404719 is about 2530.7546305401. The cubic root of 6404719 is about 185.7091747537.

The spelling of 6404719 in words is "six million, four hundred four thousand, seven hundred nineteen".