6631738 has 8 divisors (see below), whose sum is σ = 9973620. Its totient is φ = 3307200.

The previous prime is 6631733. The next prime is 6631739. The reversal of 6631738 is 8371366.

It can be written as a sum of positive squares in 2 ways, for example, as 4566769 + 2064969 = 2137^2 + 1437^2 .

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

It is not an unprimeable number, because it can be changed into a prime (6631733) by changing a digit.

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, 3333 + ... + 4936.

Almost surely, 2^6631738 is an apocalyptic number.

6631738 is a deficient number, since it is larger than the sum of its proper divisors (3341882).

6631738 is a wasteful number, since it uses less digits than its factorization.

6631738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8672.

The product of its digits is 18144, while the sum is 34.

The square root of 6631738 is about 2575.2161074364. The cubic root of 6631738 is about 187.8779387242.

It can be divided in two parts, 663 and 1738, that added together give a 4-th power (2401 = 7⁴).

The spelling of 6631738 in words is "six million, six hundred thirty-one thousand, seven hundred thirty-eight".