68535877 has 6 divisors (see below), whose sum is σ = 70439954. Its totient is φ = 66634560.

The previous prime is 68535871. The next prime is 68535881. The reversal of 68535877 is 77853586.

It can be written as a sum of positive squares in 3 ways, for example, as 4519876 + 64016001 = 2126^2 + 8001^2 .

It is not a de Polignac number, because 68535877 - 2¹⁹ = 68011589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68535877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68535871) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 49677 + ... + 51037.

Almost surely, 2^68535877 is an apocalyptic number.

It is an amenable number.

68535877 is a deficient number, since it is larger than the sum of its proper divisors (1904077).

68535877 is an frugal number, since it uses more digits than its factorization.

68535877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759 (or 1398 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 49.

The square root of 68535877 is about 8278.6398037359. The cubic root of 68535877 is about 409.2348947512.

The spelling of 68535877 in words is "sixty-eight million, five hundred thirty-five thousand, eight hundred seventy-seven".