76780012 has 6 divisors (see below), whose sum is σ = 134365028. Its totient is φ = 38390004.

The previous prime is 76780001. The next prime is 76780043. The reversal of 76780012 is 21008767.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9597498 + ... + 9597505.

Almost surely, 2^76780012 is an apocalyptic number.

It is an amenable number.

76780012 is a deficient number, since it is larger than the sum of its proper divisors (57585016).

76780012 is a wasteful number, since it uses less digits than its factorization.

76780012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19195007 (or 19195005 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 76780012 is about 8762.4204418642. The cubic root of 76780012 is about 425.0265487452.

Adding to 76780012 its reverse (21008767), we get a palindrome (97788779).

The spelling of 76780012 in words is "seventy-six million, seven hundred eighty thousand, twelve".