6696663 has 4 divisors (see below), whose sum is σ = 8928888. Its totient is φ = 4464440.

The previous prime is 6696661. The next prime is 6696671. The reversal of 6696663 is 3666966.

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

It is a cyclic number.

It is not a de Polignac number, because 6696663 - 2¹ = 6696661 is a prime.

It is a super-3 number, since 3×6696663³ (a number of 21 digits) contains 333 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6696661) 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, 1116108 + ... + 1116113.

It is an arithmetic number, because the mean of its divisors is an integer number (2232222).

Almost surely, 2^6696663 is an apocalyptic number.

6696663 is a deficient number, since it is larger than the sum of its proper divisors (2232225).

6696663 is a wasteful number, since it uses less digits than its factorization.

6696663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232224.

The product of its digits is 209952, while the sum is 42.

The square root of 6696663 is about 2587.7911430407. The cubic root of 6696663 is about 188.4890597726.

The spelling of 6696663 in words is "six million, six hundred ninety-six thousand, six hundred sixty-three".