7668261 has 12 divisors (see below), whose sum is σ = 11101740. Its totient is φ = 5100480.

The previous prime is 7668257. The next prime is 7668281. The reversal of 7668261 is 1628667.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6155361 + 1512900 = 2481^2 + 1230^2 .

It is not a de Polignac number, because 7668261 - 2² = 7668257 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7668251) 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, 5305 + ... + 6593.

It is an arithmetic number, because the mean of its divisors is an integer number (925145).

Almost surely, 2^7668261 is an apocalyptic number.

It is an amenable number.

7668261 is a deficient number, since it is larger than the sum of its proper divisors (3433479).

7668261 is a wasteful number, since it uses less digits than its factorization.

7668261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956 (or 1953 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 7668261 is about 2769.1625087741. The cubic root of 7668261 is about 197.1963908537.

The spelling of 7668261 in words is "seven million, six hundred sixty-eight thousand, two hundred sixty-one".