8166404 has 6 divisors (see below), whose sum is σ = 14291214. Its totient is φ = 4083200.

The previous prime is 8166401. The next prime is 8166407. The reversal of 8166404 is 4046618.

It is an interprime number because it is at equal distance from previous prime (8166401) and next prime (8166407).

It can be written as a sum of positive squares in only one way, i.e., 7573504 + 592900 = 2752^2 + 770^2 .

It is not an unprimeable number, because it can be changed into a prime (8166401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020797 + ... + 1020804.

It is an arithmetic number, because the mean of its divisors is an integer number (2381869).

Almost surely, 2^8166404 is an apocalyptic number.

It is an amenable number.

8166404 is a deficient number, since it is larger than the sum of its proper divisors (6124810).

8166404 is a wasteful number, since it uses less digits than its factorization.

8166404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041605 (or 2041603 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 8166404 is about 2857.6920757842. The cubic root of 8166404 is about 201.3771949037.

The spelling of 8166404 in words is "eight million, one hundred sixty-six thousand, four hundred four".