196697866 has 12 divisors (see below), whose sum is σ = 296509878. Its totient is φ = 97862672.

The previous prime is 196697849. The next prime is 196697873. The reversal of 196697866 is 668796691.

It can be written as a sum of positive squares in 3 ways, for example, as 32729841 + 163968025 = 5721^2 + 12805^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 196697866.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 352860 + ... + 353416.

Almost surely, 2^196697866 is an apocalyptic number.

196697866 is a deficient number, since it is larger than the sum of its proper divisors (99812012).

196697866 is an frugal number, since it uses more digits than its factorization.

196697866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 876 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 58.

The square root of 196697866 is about 14024.9016395838. The cubic root of 196697866 is about 581.5671706988.

The spelling of 196697866 in words is "one hundred ninety-six million, six hundred ninety-seven thousand, eight hundred sixty-six".