196066777 has 4 divisors (see below), whose sum is σ = 196220880. Its totient is φ = 195912676.

The previous prime is 196066747. The next prime is 196066807. The reversal of 196066777 is 777660691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (196066747) and next prime (196066807).

It is a cyclic number.

It is not a de Polignac number, because 196066777 - 2⁷ = 196066649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 196066777.

It is not an unprimeable number, because it can be changed into a prime (196066727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75127 + ... + 77692.

It is an arithmetic number, because the mean of its divisors is an integer number (49055220).

Almost surely, 2^196066777 is an apocalyptic number.

It is an amenable number.

196066777 is a deficient number, since it is larger than the sum of its proper divisors (154103).

196066777 is a wasteful number, since it uses less digits than its factorization.

196066777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154102.

The product of its (nonzero) digits is 666792, while the sum is 49.

The square root of 196066777 is about 14002.3846897591. The cubic root of 196066777 is about 580.9445341118.

The spelling of 196066777 in words is "one hundred ninety-six million, sixty-six thousand, seven hundred seventy-seven".