77185996 has 12 divisors (see below), whose sum is σ = 138726448. Its totient is φ = 37549872.

The previous prime is 77185993. The next prime is 77186027. The reversal of 77185996 is 69958177.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (77185993) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 260616 + ... + 260911.

Almost surely, 2^77185996 is an apocalyptic number.

It is an amenable number.

77185996 is a deficient number, since it is larger than the sum of its proper divisors (61540452).

77185996 is a wasteful number, since it uses less digits than its factorization.

77185996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521568 (or 521566 counting only the distinct ones).

The product of its digits is 952560, while the sum is 52.

The square root of 77185996 is about 8785.5561007827. The cubic root of 77185996 is about 425.7743594081.

The spelling of 77185996 in words is "seventy-seven million, one hundred eighty-five thousand, nine hundred ninety-six".