7666943 has 4 divisors (see below), whose sum is σ = 7845288. Its totient is φ = 7488600.

The previous prime is 7666913. The next prime is 7666973. The reversal of 7666943 is 3496667.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3496667 = 23 ⋅152029.

It is an interprime number because it is at equal distance from previous prime (7666913) and next prime (7666973).

It is a cyclic number.

It is not a de Polignac number, because 7666943 - 2¹² = 7662847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7666943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7666903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89108 + ... + 89193.

It is an arithmetic number, because the mean of its divisors is an integer number (1961322).

Almost surely, 2^7666943 is an apocalyptic number.

7666943 is a deficient number, since it is larger than the sum of its proper divisors (178345).

7666943 is a wasteful number, since it uses less digits than its factorization.

7666943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178344.

The product of its digits is 163296, while the sum is 41.

The square root of 7666943 is about 2768.9245204592. The cubic root of 7666943 is about 197.1850923453.

The spelling of 7666943 in words is "seven million, six hundred sixty-six thousand, nine hundred forty-three".