8197778 has 32 divisors (see below), whose sum is σ = 13780800. Its totient is φ = 3640896.

The previous prime is 8197771. The next prime is 8197789. The reversal of 8197778 is 8777918.

It is not an unprimeable number, because it can be changed into a prime (8197771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47300 + ... + 47472.

It is an arithmetic number, because the mean of its divisors is an integer number (430650).

Almost surely, 2^8197778 is an apocalyptic number.

8197778 is a deficient number, since it is larger than the sum of its proper divisors (5583022).

8197778 is a wasteful number, since it uses less digits than its factorization.

8197778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266.

The product of its digits is 197568, while the sum is 47.

The square root of 8197778 is about 2863.1762083393. The cubic root of 8197778 is about 201.6347515311.

The spelling of 8197778 in words is "eight million, one hundred ninety-seven thousand, seven hundred seventy-eight".