68830705 has 16 divisors (see below), whose sum is σ = 87664464. Its totient is φ = 51701760.

The previous prime is 68830703. The next prime is 68830709. The reversal of 68830705 is 50703886.

It can be written as a sum of positive squares in 8 ways, for example, as 73441 + 68757264 = 271^2 + 8292^2 .

It is not a de Polignac number, because 68830705 - 2¹ = 68830703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68830703) 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, 51445 + ... + 52765.

It is an arithmetic number, because the mean of its divisors is an integer number (5479029).

Almost surely, 2^68830705 is an apocalyptic number.

It is an amenable number.

68830705 is a deficient number, since it is larger than the sum of its proper divisors (18833759).

68830705 is a wasteful number, since it uses less digits than its factorization.

68830705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 68830705 is about 8296.4272430969. The cubic root of 68830705 is about 409.8208715819.

The spelling of 68830705 in words is "sixty-eight million, eight hundred thirty thousand, seven hundred five".