68120635 has 16 divisors (see below), whose sum is σ = 90862560. Its totient is φ = 48605440.

The previous prime is 68120629. The next prime is 68120651. The reversal of 68120635 is 53602186.

It is not a de Polignac number, because 68120635 - 2⁵ = 68120603 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68120597 and 68120606.

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 15 ways as a sum of consecutive naturals, for example, 8770 + ... + 14599.

It is an arithmetic number, because the mean of its divisors is an integer number (5678910).

Almost surely, 2^68120635 is an apocalyptic number.

68120635 is a deficient number, since it is larger than the sum of its proper divisors (22741925).

68120635 is a wasteful number, since it uses less digits than its factorization.

68120635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23438.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 68120635 is about 8253.5225812982. The cubic root of 68120635 is about 408.4067354740.

It can be divided in two parts, 681 and 20635, that added together give a square (21316 = 146²).

The spelling of 68120635 in words is "sixty-eight million, one hundred twenty thousand, six hundred thirty-five".