196797878 has 16 divisors (see below), whose sum is σ = 297722304. Its totient is φ = 97560960.

The previous prime is 196797869. The next prime is 196797901. The reversal of 196797878 is 878797691.

It is a self number, because there is not a number n which added to its sum of digits gives 196797878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143918 + ... + 145278.

It is an arithmetic number, because the mean of its divisors is an integer number (18607644).

Almost surely, 2^196797878 is an apocalyptic number.

196797878 is a deficient number, since it is larger than the sum of its proper divisors (100924426).

196797878 is a wasteful number, since it uses less digits than its factorization.

196797878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927.

The product of its digits is 10668672, while the sum is 62.

The square root of 196797878 is about 14028.4667016748. The cubic root of 196797878 is about 581.6657208966.

The spelling of 196797878 in words is "one hundred ninety-six million, seven hundred ninety-seven thousand, eight hundred seventy-eight".