77945356 has 12 divisors (see below), whose sum is σ = 136466568. Its totient is φ = 38954912.

The previous prime is 77945341. The next prime is 77945389. The reversal of 77945356 is 65354977.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13320 + ... + 18256.

It is an arithmetic number, because the mean of its divisors is an integer number (11372214).

Almost surely, 2^77945356 is an apocalyptic number.

It is an amenable number.

77945356 is a deficient number, since it is larger than the sum of its proper divisors (58521212).

77945356 is a wasteful number, since it uses less digits than its factorization.

77945356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8888 (or 8886 counting only the distinct ones).

The product of its digits is 793800, while the sum is 46.

The square root of 77945356 is about 8828.6667170077. Note that the first 3 decimals coincide. The cubic root of 77945356 is about 427.1660691511.

The spelling of 77945356 in words is "seventy-seven million, nine hundred forty-five thousand, three hundred fifty-six".