6405064 has 16 divisors (see below), whose sum is σ = 12038400. Its totient is φ = 3194832.

The previous prime is 6405059. The next prime is 6405067. The reversal of 6405064 is 4605046.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6405067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4197 + ... + 5515.

It is an arithmetic number, because the mean of its divisors is an integer number (752400).

Almost surely, 2^6405064 is an apocalyptic number.

It is an amenable number.

6405064 is a deficient number, since it is larger than the sum of its proper divisors (5633336).

6405064 is a wasteful number, since it uses less digits than its factorization.

6405064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932 (or 1928 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 6405064 is about 2530.8227911096. The cubic root of 6405064 is about 185.7125091969.

The spelling of 6405064 in words is "six million, four hundred five thousand, sixty-four".