7812166 has 8 divisors (see below), whose sum is σ = 11748960. Its totient is φ = 3895848.

The previous prime is 7812137. The next prime is 7812169. The reversal of 7812166 is 6612187.

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

It is a super-2 number, since 2×7812166² = 122059875223112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7812169) 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, 4126 + ... + 5713.

It is an arithmetic number, because the mean of its divisors is an integer number (1468620).

Almost surely, 2^7812166 is an apocalyptic number.

7812166 is a deficient number, since it is larger than the sum of its proper divisors (3936794).

7812166 is a wasteful number, since it uses less digits than its factorization.

7812166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10238.

The product of its digits is 4032, while the sum is 31.

The square root of 7812166 is about 2795.0252234998. The cubic root of 7812166 is about 198.4223037653.

It can be divided in two parts, 78121 and 66, that added together give a palindrome (78187).

The spelling of 7812166 in words is "seven million, eight hundred twelve thousand, one hundred sixty-six".