77327812 has 6 divisors (see below), whose sum is σ = 135323678. Its totient is φ = 38663904.

The previous prime is 77327801. The next prime is 77327813. The reversal of 77327812 is 21872377.

It can be written as a sum of positive squares in only one way, i.e., 42823936 + 34503876 = 6544^2 + 5874^2 .

It is not an unprimeable number, because it can be changed into a prime (77327813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9665973 + ... + 9665980.

Almost surely, 2^77327812 is an apocalyptic number.

It is an amenable number.

77327812 is a deficient number, since it is larger than the sum of its proper divisors (57995866).

77327812 is a wasteful number, since it uses less digits than its factorization.

77327812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19331957 (or 19331955 counting only the distinct ones).

The product of its digits is 32928, while the sum is 37.

The square root of 77327812 is about 8793.6233715119. The cubic root of 77327812 is about 426.0349622683.

The spelling of 77327812 in words is "seventy-seven million, three hundred twenty-seven thousand, eight hundred twelve".