6663736 has 16 divisors (see below), whose sum is σ = 12925800. Its totient is φ = 3216864.

The previous prime is 6663731. The next prime is 6663739. The reversal of 6663736 is 6373666.

It is a junction number, because it is equal to n+sod(n) for n = 6663695 and 6663704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6663731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14130 + ... + 14593.

Almost surely, 2^6663736 is an apocalyptic number.

It is an amenable number.

6663736 is a deficient number, since it is larger than the sum of its proper divisors (6262064).

6663736 is a wasteful number, since it uses less digits than its factorization.

6663736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28758 (or 28754 counting only the distinct ones).

The product of its digits is 81648, while the sum is 37.

The square root of 6663736 is about 2581.4213139277. The cubic root of 6663736 is about 188.1796231048.

It can be divided in two parts, 66637 and 36, that multiplied together give a palindrome (2398932).

The spelling of 6663736 in words is "six million, six hundred sixty-three thousand, seven hundred thirty-six".