8196778 has 4 divisors (see below), whose sum is σ = 12295170. Its totient is φ = 4098388.

The previous prime is 8196757. The next prime is 8196779. The reversal of 8196778 is 8776918.

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

It can be written as a sum of positive squares in only one way, i.e., 8196769 + 9 = 2863^2 + 3^2 .

It is not an unprimeable number, because it can be changed into a prime (8196779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2049193 + ... + 2049196.

Almost surely, 2^8196778 is an apocalyptic number.

8196778 is a deficient number, since it is larger than the sum of its proper divisors (4098392).

8196778 is a wasteful number, since it uses less digits than its factorization.

8196778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4098391.

The product of its digits is 169344, while the sum is 46.

The square root of 8196778 is about 2863.0015717774. The cubic root of 8196778 is about 201.6265524414.

The spelling of 8196778 in words is "eight million, one hundred ninety-six thousand, seven hundred seventy-eight".