6400732 has 12 divisors (see below), whose sum is σ = 12063016. Its totient is φ = 2954160.

The previous prime is 6400717. The next prime is 6400753. The reversal of 6400732 is 2370046.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61494 + ... + 61597.

Almost surely, 2^6400732 is an apocalyptic number.

It is an amenable number.

6400732 is a deficient number, since it is larger than the sum of its proper divisors (5662284).

6400732 is a wasteful number, since it uses less digits than its factorization.

6400732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123108 (or 123106 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 6400732 is about 2529.9667982011. The cubic root of 6400732 is about 185.6706314976.

Adding to 6400732 its reverse (2370046), we get a palindrome (8770778).

The spelling of 6400732 in words is "six million, four hundred thousand, seven hundred thirty-two".