6404087 has 8 divisors (see below), whose sum is σ = 6804000. Its totient is φ = 6006784.

The previous prime is 6404063. The next prime is 6404089. The reversal of 6404087 is 7804046.

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 6404087 - 2⁶ = 6404023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6404089) 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, 7214 + ... + 8052.

It is an arithmetic number, because the mean of its divisors is an integer number (850500).

Almost surely, 2^6404087 is an apocalyptic number.

6404087 is a deficient number, since it is larger than the sum of its proper divisors (399913).

6404087 is a wasteful number, since it uses less digits than its factorization.

6404087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 6404087 is about 2530.6297635174. The cubic root of 6404087 is about 185.7030661298.

The spelling of 6404087 in words is "six million, four hundred four thousand, eighty-seven".