6400734 has 8 divisors (see below), whose sum is σ = 12801480. Its totient is φ = 2133576.

The previous prime is 6400717. The next prime is 6400753. The reversal of 6400734 is 4370046.

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

6400734 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533389 + ... + 533400.

It is an arithmetic number, because the mean of its divisors is an integer number (1600185).

Almost surely, 2^6400734 is an apocalyptic number.

6400734 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6400734 is a wasteful number, since it uses less digits than its factorization.

6400734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066794.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 6400734 is about 2529.9671934632. The cubic root of 6400734 is about 185.6706508361.

The spelling of 6400734 in words is "six million, four hundred thousand, seven hundred thirty-four".