68660577 has 12 divisors (see below), whose sum is σ = 100200100. Its totient is φ = 45301248.

The previous prime is 68660573. The next prime is 68660587. The reversal of 68660577 is 77506686.

It can be written as a sum of positive squares in 2 ways, for example, as 23824161 + 44836416 = 4881^2 + 6696^2 .

It is not a de Polignac number, because 68660577 - 2² = 68660573 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68660573) 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 11 ways as a sum of consecutive naturals, for example, 38452 + ... + 40197.

Almost surely, 2^68660577 is an apocalyptic number.

It is an amenable number.

68660577 is a deficient number, since it is larger than the sum of its proper divisors (31539523).

68660577 is a wasteful number, since it uses less digits than its factorization.

68660577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78752 (or 78749 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 68660577 is about 8286.1678114796. The cubic root of 68660577 is about 409.4829432890.

The spelling of 68660577 in words is "sixty-eight million, six hundred sixty thousand, five hundred seventy-seven".