6440702 has 4 divisors (see below), whose sum is σ = 9661056. Its totient is φ = 3220350.

The previous prime is 6440699. The next prime is 6440723. The reversal of 6440702 is 2070446.

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

It is a plaindrome in base 13.

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 as a sum of consecutive naturals, namely, 1610174 + ... + 1610177.

It is an arithmetic number, because the mean of its divisors is an integer number (2415264).

Almost surely, 2^6440702 is an apocalyptic number.

6440702 is a deficient number, since it is larger than the sum of its proper divisors (3220354).

6440702 is a wasteful number, since it uses less digits than its factorization.

6440702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220353.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 6440702 is about 2537.8538176972. The cubic root of 6440702 is about 186.0563093089.

The spelling of 6440702 in words is "six million, four hundred forty thousand, seven hundred two".