77786012 has 12 divisors (see below), whose sum is σ = 137447856. Its totient is φ = 38515200.

The previous prime is 77785969. The next prime is 77786029. The reversal of 77786012 is 21068777.

It is a congruent number.

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, 93989 + ... + 94812.

It is an arithmetic number, because the mean of its divisors is an integer number (11453988).

Almost surely, 2^77786012 is an apocalyptic number.

It is an amenable number.

77786012 is a deficient number, since it is larger than the sum of its proper divisors (59661844).

77786012 is a wasteful number, since it uses less digits than its factorization.

77786012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188908 (or 188906 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 77786012 is about 8819.6378610462. The cubic root of 77786012 is about 426.8747848073.

The spelling of 77786012 in words is "seventy-seven million, seven hundred eighty-six thousand, twelve".