6629985 has 32 divisors (see below), whose sum is σ = 11978880. Its totient is φ = 3478464.

The previous prime is 6629969. The next prime is 6630011. The reversal of 6629985 is 5899266.

It is not a de Polignac number, because 6629985 - 2⁴ = 6629969 is a prime.

It is a super-2 number, since 2×6629985² = 87913402200450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6629985.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8679 + ... + 9411.

It is an arithmetic number, because the mean of its divisors is an integer number (374340).

Almost surely, 2^6629985 is an apocalyptic number.

It is an amenable number.

6629985 is a deficient number, since it is larger than the sum of its proper divisors (5348895).

6629985 is a wasteful number, since it uses less digits than its factorization.

6629985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 808 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 6629985 is about 2574.8757251565. The cubic root of 6629985 is about 187.8613830315.

The spelling of 6629985 in words is "six million, six hundred twenty-nine thousand, nine hundred eighty-five".