6404158 has 4 divisors (see below), whose sum is σ = 9606240. Its totient is φ = 3202078.

The previous prime is 6404141. The next prime is 6404161. The reversal of 6404158 is 8514046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8514046 = 2 ⋅4257023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1601038 + ... + 1601041.

It is an arithmetic number, because the mean of its divisors is an integer number (2401560).

Almost surely, 2^6404158 is an apocalyptic number.

6404158 is a deficient number, since it is larger than the sum of its proper divisors (3202082).

6404158 is a wasteful number, since it uses less digits than its factorization.

6404158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202081.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 6404158 is about 2530.6437916072. The cubic root of 6404158 is about 185.7037524034.

The spelling of 6404158 in words is "six million, four hundred four thousand, one hundred fifty-eight".