6660261 has 12 divisors (see below), whose sum is σ = 9697792. Its totient is φ = 4404456.

The previous prime is 6660239. The next prime is 6660287. The reversal of 6660261 is 1620666.

It is not a de Polignac number, because 6660261 - 2⁶ = 6660197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1771 + ... + 4056.

Almost surely, 2^6660261 is an apocalyptic number.

It is an amenable number.

6660261 is a deficient number, since it is larger than the sum of its proper divisors (3037531).

6660261 is a wasteful number, since it uses less digits than its factorization.

6660261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5960 (or 5957 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 6660261 is about 2580.7481473402. The cubic root of 6660261 is about 188.1469068281.

The spelling of 6660261 in words is "six million, six hundred sixty thousand, two hundred sixty-one".