77868196 has 12 divisors (see below), whose sum is σ = 155736448. Its totient is φ = 33372072.

The previous prime is 77868169. The next prime is 77868199. The reversal of 77868196 is 69186877.

77868196 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (77868199) 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, 1390476 + ... + 1390531.

Almost surely, 2^77868196 is an apocalyptic number.

It is an amenable number.

77868196 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77868196 is a wasteful number, since it uses less digits than its factorization.

77868196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781018 (or 2781016 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 52.

The square root of 77868196 is about 8824.2957792676. The cubic root of 77868196 is about 427.0250685939.

The spelling of 77868196 in words is "seventy-seven million, eight hundred sixty-eight thousand, one hundred ninety-six".