7816166 has 4 divisors (see below), whose sum is σ = 11724252. Its totient is φ = 3908082.

The previous prime is 7816157. The next prime is 7816169. The reversal of 7816166 is 6616187.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6616187 = 223 ⋅29669.

It is a super-2 number, since 2×7816166² = 122184901879112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7816169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1954040 + ... + 1954043.

It is an arithmetic number, because the mean of its divisors is an integer number (2931063).

Almost surely, 2^7816166 is an apocalyptic number.

7816166 is a deficient number, since it is larger than the sum of its proper divisors (3908086).

7816166 is a wasteful number, since it uses less digits than its factorization.

7816166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3908085.

The product of its digits is 12096, while the sum is 35.

The square root of 7816166 is about 2795.7406889767. The cubic root of 7816166 is about 198.4561635080.

The spelling of 7816166 in words is "seven million, eight hundred sixteen thousand, one hundred sixty-six".