68643735 has 16 divisors (see below), whose sum is σ = 112167936. Its totient is φ = 35830688.

The previous prime is 68643691. The next prime is 68643737. The reversal of 68643735 is 53734686.

It is a cyclic number.

It is not a de Polignac number, because 68643735 - 2⁸ = 68643479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68643737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47979 + ... + 49388.

It is an arithmetic number, because the mean of its divisors is an integer number (7010496).

Almost surely, 2^68643735 is an apocalyptic number.

68643735 is a deficient number, since it is larger than the sum of its proper divisors (43524201).

68643735 is a wasteful number, since it uses less digits than its factorization.

68643735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97422.

The product of its digits is 362880, while the sum is 42.

The square root of 68643735 is about 8285.1514771910. The cubic root of 68643735 is about 409.4494593695.

It can be divided in two parts, 68643 and 735, that added together give a triangular number (69378 = T₃₇₂).

The spelling of 68643735 in words is "sixty-eight million, six hundred forty-three thousand, seven hundred thirty-five".