7166623 has 4 divisors (see below), whose sum is σ = 7206840. Its totient is φ = 7126408.

The previous prime is 7166609. The next prime is 7166633. The reversal of 7166623 is 3266617.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7166623 - 2¹⁷ = 7035551 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7166603) 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, 19840 + ... + 20197.

It is an arithmetic number, because the mean of its divisors is an integer number (1801710).

Almost surely, 2^7166623 is an apocalyptic number.

7166623 is a deficient number, since it is larger than the sum of its proper divisors (40217).

7166623 is a wasteful number, since it uses less digits than its factorization.

7166623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40216.

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

The square root of 7166623 is about 2677.0549116520. The cubic root of 7166623 is about 192.7990337440.

The spelling of 7166623 in words is "seven million, one hundred sixty-six thousand, six hundred twenty-three".