7231666 has 16 divisors (see below), whose sum is σ = 12297600. Its totient is φ = 3161808.

The previous prime is 7231663. The next prime is 7231669. The reversal of 7231666 is 6661327.

It is an interprime number because it is at equal distance from previous prime (7231663) and next prime (7231669).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7231663) 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, 6826 + ... + 7813.

It is an arithmetic number, because the mean of its divisors is an integer number (768600).

Almost surely, 2^7231666 is an apocalyptic number.

7231666 is a deficient number, since it is larger than the sum of its proper divisors (5065934).

7231666 is a wasteful number, since it uses less digits than its factorization.

7231666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14673.

The product of its digits is 9072, while the sum is 31.

The square root of 7231666 is about 2689.1757101387. The cubic root of 7231666 is about 193.3805479877.

The spelling of 7231666 in words is "seven million, two hundred thirty-one thousand, six hundred sixty-six".