6630261 has 16 divisors (see below), whose sum is σ = 9689088. Its totient is φ = 3999600.

The previous prime is 6630257. The next prime is 6630269. The reversal of 6630261 is 1620366.

6630261 is nontrivially palindromic in base 13.

6630261 is a nontrivial binomial coefficient, being equal to C(3642, 2).

It is not a de Polignac number, because 6630261 - 2² = 6630257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6630269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10620 + ... + 11226.

It is an arithmetic number, because the mean of its divisors is an integer number (605568).

Almost surely, 2^6630261 is an apocalyptic number.

6630261 is the 3641-st triangular number and also the 1821-st hexagonal number.

It is an amenable number.

6630261 is a deficient number, since it is larger than the sum of its proper divisors (3058827).

6630261 is a wasteful number, since it uses less digits than its factorization.

6630261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 6630261 is about 2574.9293194183. The cubic root of 6630261 is about 187.8639898258.

The spelling of 6630261 in words is "six million, six hundred thirty thousand, two hundred sixty-one".