7666749 has 12 divisors (see below), whose sum is σ = 11138400. Its totient is φ = 5081544.

The previous prime is 7666741. The next prime is 7666787. The reversal of 7666749 is 9476667.

It is not a de Polignac number, because 7666749 - 2³ = 7666741 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7666741) 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, 769 + ... + 3990.

It is an arithmetic number, because the mean of its divisors is an integer number (928200).

Almost surely, 2^7666749 is an apocalyptic number.

It is an amenable number.

7666749 is a deficient number, since it is larger than the sum of its proper divisors (3471651).

7666749 is a wasteful number, since it uses less digits than its factorization.

7666749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4944 (or 4941 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 7666749 is about 2768.8894885856. The cubic root of 7666749 is about 197.1834291778.

The spelling of 7666749 in words is "seven million, six hundred sixty-six thousand, seven hundred forty-nine".