7247666 has 8 divisors (see below), whose sum is σ = 10890624. Its totient is φ = 3617460.

The previous prime is 7247663. The next prime is 7247687. The reversal of 7247666 is 6667427.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (7247663) 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 3 ways as a sum of consecutive naturals, for example, 1610 + ... + 4133.

It is an arithmetic number, because the mean of its divisors is an integer number (1361328).

Almost surely, 2^7247666 is an apocalyptic number.

7247666 is a deficient number, since it is larger than the sum of its proper divisors (3642958).

7247666 is a wasteful number, since it uses less digits than its factorization.

7247666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6376.

The product of its digits is 84672, while the sum is 38.

The square root of 7247666 is about 2692.1489557601. The cubic root of 7247666 is about 193.5230605469.

The spelling of 7247666 in words is "seven million, two hundred forty-seven thousand, six hundred sixty-six".