77315564 has 12 divisors (see below), whose sum is σ = 138181344. Its totient is φ = 37835184.

The previous prime is 77315549. The next prime is 77315569. The reversal of 77315564 is 46551377.

It is not an unprimeable number, because it can be changed into a prime (77315569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205439 + ... + 205814.

It is an arithmetic number, because the mean of its divisors is an integer number (11515112).

Almost surely, 2^77315564 is an apocalyptic number.

It is an amenable number.

77315564 is a deficient number, since it is larger than the sum of its proper divisors (60865780).

77315564 is a wasteful number, since it uses less digits than its factorization.

77315564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411304 (or 411302 counting only the distinct ones).

The product of its digits is 88200, while the sum is 38.

The square root of 77315564 is about 8792.9269302093. The cubic root of 77315564 is about 426.0124677668.

The spelling of 77315564 in words is "seventy-seven million, three hundred fifteen thousand, five hundred sixty-four".