68631265 has 8 divisors (see below), whose sum is σ = 82503720. Its totient is φ = 54807552.

The previous prime is 68631259. The next prime is 68631307. The reversal of 68631265 is 56213686.

It can be written as a sum of positive squares in 4 ways, for example, as 15618304 + 53012961 = 3952^2 + 7281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68631265 - 2⁹ = 68630753 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 9010 + ... + 14779.

It is an arithmetic number, because the mean of its divisors is an integer number (10312965).

Almost surely, 2^68631265 is an apocalyptic number.

It is an amenable number.

68631265 is a deficient number, since it is larger than the sum of its proper divisors (13872455).

68631265 is a wasteful number, since it uses less digits than its factorization.

68631265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24371.

The product of its digits is 51840, while the sum is 37.

The square root of 68631265 is about 8284.3988918931. The cubic root of 68631265 is about 409.4246639823.

It can be divided in two parts, 6863 and 1265, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 68631265 in words is "sixty-eight million, six hundred thirty-one thousand, two hundred sixty-five".