6404457 has 8 divisors (see below), whose sum is σ = 8555776. Its totient is φ = 4261392.

The previous prime is 6404449. The next prime is 6404473. The reversal of 6404457 is 7544046.

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

It is not a de Polignac number, because 6404457 - 2³ = 6404449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6404407) 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, 63 + ... + 3579.

It is an arithmetic number, because the mean of its divisors is an integer number (1069472).

Almost surely, 2^6404457 is an apocalyptic number.

It is an amenable number.

6404457 is a deficient number, since it is larger than the sum of its proper divisors (2151319).

6404457 is a wasteful number, since it uses less digits than its factorization.

6404457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4127.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 6404457 is about 2530.7028667941. The cubic root of 6404457 is about 185.7066424299.

The spelling of 6404457 in words is "six million, four hundred four thousand, four hundred fifty-seven".