77316506 has 16 divisors (see below), whose sum is σ = 118449864. Its totient is φ = 37836864.

The previous prime is 77316497. The next prime is 77316541. The reversal of 77316506 is 60561377.

It can be written as a sum of positive squares in 4 ways, for example, as 44769481 + 32547025 = 6691^2 + 5705^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 68660 + ... + 69776.

Almost surely, 2^77316506 is an apocalyptic number.

77316506 is a deficient number, since it is larger than the sum of its proper divisors (41133358).

77316506 is a wasteful number, since it uses less digits than its factorization.

77316506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 77316506 is about 8792.9804958273. The cubic root of 77316506 is about 426.0141979148.

The spelling of 77316506 in words is "seventy-seven million, three hundred sixteen thousand, five hundred six".