6405874 has 4 divisors (see below), whose sum is σ = 9608814. Its totient is φ = 3202936.

The previous prime is 6405829. The next prime is 6405877. The reversal of 6405874 is 4785046.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3829849 + 2576025 = 1957^2 + 1605^2 .

It is not an unprimeable number, because it can be changed into a prime (6405877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1601467 + ... + 1601470.

Almost surely, 2^6405874 is an apocalyptic number.

6405874 is a deficient number, since it is larger than the sum of its proper divisors (3202940).

6405874 is a wasteful number, since it uses less digits than its factorization.

6405874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202939.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 6405874 is about 2530.9828130590. The cubic root of 6405874 is about 185.7203374190.

The spelling of 6405874 in words is "six million, four hundred five thousand, eight hundred seventy-four".