6663629 has 8 divisors (see below), whose sum is σ = 7946880. Its totient is φ = 5463216.

The previous prime is 6663617. The next prime is 6663647. The reversal of 6663629 is 9263666.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6663629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6663592 and 6663601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6663029) 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, 20534 + ... + 20855.

It is an arithmetic number, because the mean of its divisors is an integer number (993360).

Almost surely, 2^6663629 is an apocalyptic number.

It is an amenable number.

6663629 is a deficient number, since it is larger than the sum of its proper divisors (1283251).

6663629 is a wasteful number, since it uses less digits than its factorization.

6663629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41419.

The product of its digits is 69984, while the sum is 38.

The square root of 6663629 is about 2581.4005888277. The cubic root of 6663629 is about 188.1786158957.

The spelling of 6663629 in words is "six million, six hundred sixty-three thousand, six hundred twenty-nine".