7481666 has 16 divisors (see below), whose sum is σ = 11953656. Its totient is φ = 3499776.

The previous prime is 7481653. The next prime is 7481701. The reversal of 7481666 is 6661847.

It can be written as a sum of positive squares in 4 ways, for example, as 7155625 + 326041 = 2675^2 + 571^2 .

It is a super-2 number, since 2×7481666² = 111950652271112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6140 + ... + 7256.

Almost surely, 2^7481666 is an apocalyptic number.

7481666 is a deficient number, since it is larger than the sum of its proper divisors (4471990).

7481666 is a wasteful number, since it uses less digits than its factorization.

7481666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333.

The product of its digits is 48384, while the sum is 38.

The square root of 7481666 is about 2735.2634242427. The cubic root of 7481666 is about 195.5837515062.

The spelling of 7481666 in words is "seven million, four hundred eighty-one thousand, six hundred sixty-six".