6440794 has 8 divisors (see below), whose sum is σ = 9825120. Its totient is φ = 3165756.

The previous prime is 6440789. The next prime is 6440803. The reversal of 6440794 is 4970446.

6440794 = 33² + 34² + ... + 268².

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27174 + ... + 27409.

It is an arithmetic number, because the mean of its divisors is an integer number (1228140).

Almost surely, 2^6440794 is an apocalyptic number.

6440794 is a deficient number, since it is larger than the sum of its proper divisors (3384326).

6440794 is a wasteful number, since it uses less digits than its factorization.

6440794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54644.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 6440794 is about 2537.8719431839. The cubic root of 6440794 is about 186.0571951905.

The spelling of 6440794 in words is "six million, four hundred forty thousand, seven hundred ninety-four".