6663597 has 8 divisors (see below), whose sum is σ = 8897856. Its totient is φ = 4435872.

The previous prime is 6663593. The next prime is 6663599. The reversal of 6663597 is 7953666.

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

It is not a de Polignac number, because 6663597 - 2² = 6663593 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6663593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1753 + ... + 4049.

It is an arithmetic number, because the mean of its divisors is an integer number (1112232).

Almost surely, 2^6663597 is an apocalyptic number.

It is an amenable number.

6663597 is a deficient number, since it is larger than the sum of its proper divisors (2234259).

6663597 is a wasteful number, since it uses less digits than its factorization.

6663597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267.

The product of its digits is 204120, while the sum is 42.

The square root of 6663597 is about 2581.3943906346. The cubic root of 6663597 is about 188.1783146721.

It can be divided in two parts, 6663 and 597, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 6663597 in words is "six million, six hundred sixty-three thousand, five hundred ninety-seven".