196066778 has 8 divisors (see below), whose sum is σ = 295059072. Its totient is φ = 97713756.

The previous prime is 196066747. The next prime is 196066807. The reversal of 196066778 is 877660691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159050 + ... + 160277.

It is an arithmetic number, because the mean of its divisors is an integer number (36882384).

Almost surely, 2^196066778 is an apocalyptic number.

196066778 is a deficient number, since it is larger than the sum of its proper divisors (98992294).

196066778 is a wasteful number, since it uses less digits than its factorization.

196066778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319636.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 196066778 is about 14002.3847254673. The cubic root of 196066778 is about 580.9445350994.

The spelling of 196066778 in words is "one hundred ninety-six million, sixty-six thousand, seven hundred seventy-eight".