6723988 has 12 divisors (see below), whose sum is σ = 11790772. Its totient is φ = 3355200.

The previous prime is 6723979. The next prime is 6724007. The reversal of 6723988 is 8893276.

It can be written as a sum of positive squares in 2 ways, for example, as 5326864 + 1397124 = 2308^2 + 1182^2 .

It is a congruent number.

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, 1006 + ... + 3802.

Almost surely, 2^6723988 is an apocalyptic number.

It is an amenable number.

6723988 is a deficient number, since it is larger than the sum of its proper divisors (5066784).

6723988 is a wasteful number, since it uses less digits than its factorization.

6723988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3402 (or 3400 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 6723988 is about 2593.0653674753. The cubic root of 6723988 is about 188.7450815203.

The spelling of 6723988 in words is "six million, seven hundred twenty-three thousand, nine hundred eighty-eight".