6630491 has 8 divisors (see below), whose sum is σ = 7594464. Its totient is φ = 5670720.

The previous prime is 6630467. The next prime is 6630499. The reversal of 6630491 is 1940366.

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-6630491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6630499) 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, 3911 + ... + 5343.

It is an arithmetic number, because the mean of its divisors is an integer number (949308).

Almost surely, 2^6630491 is an apocalyptic number.

6630491 is a deficient number, since it is larger than the sum of its proper divisors (963973).

6630491 is a wasteful number, since it uses less digits than its factorization.

6630491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 6630491 is about 2574.9739804511. The cubic root of 6630491 is about 187.8661620992.

The spelling of 6630491 in words is "six million, six hundred thirty thousand, four hundred ninety-one".