68435705 has 12 divisors (see below), whose sum is σ = 88927020. Its totient is φ = 50536512.

The previous prime is 68435699. The next prime is 68435723. The reversal of 68435705 is 50753486.

It can be written as a sum of positive squares in 6 ways, for example, as 2062096 + 66373609 = 1436^2 + 8147^2 .

It is not a de Polignac number, because 68435705 - 2⁶ = 68435641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39650 + ... + 41339.

It is an arithmetic number, because the mean of its divisors is an integer number (7410585).

Almost surely, 2^68435705 is an apocalyptic number.

68435705 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68435705 is a deficient number, since it is larger than the sum of its proper divisors (20491315).

68435705 is a wasteful number, since it uses less digits than its factorization.

68435705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81020 (or 81007 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 68435705 is about 8272.5875637554. The cubic root of 68435705 is about 409.0354183694.

The spelling of 68435705 in words is "sixty-eight million, four hundred thirty-five thousand, seven hundred five".