68752765 has 16 divisors (see below), whose sum is σ = 85996080. Its totient is φ = 52702720.

The previous prime is 68752757. The next prime is 68752769. The reversal of 68752765 is 56725786.

It can be written as a sum of positive squares in 8 ways, for example, as 2134521 + 66618244 = 1461^2 + 8162^2 .

It is not a de Polignac number, because 68752765 - 2³ = 68752757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68752769) by changing a digit.

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, 18135 + ... + 21595.

It is an arithmetic number, because the mean of its divisors is an integer number (5374755).

Almost surely, 2^68752765 is an apocalyptic number.

It is an amenable number.

68752765 is a deficient number, since it is larger than the sum of its proper divisors (17243315).

68752765 is a wasteful number, since it uses less digits than its factorization.

68752765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3632.

The product of its digits is 705600, while the sum is 46.

The square root of 68752765 is about 8291.7287099856. The cubic root of 68752765 is about 409.6661271620. Note that the first 3 decimals are identical.

The spelling of 68752765 in words is "sixty-eight million, seven hundred fifty-two thousand, seven hundred sixty-five".