68026660 has 24 divisors (see below), whose sum is σ = 153845496. Its totient is φ = 25117440.

The previous prime is 68026657. The next prime is 68026697. The reversal of 68026660 is 6662086.

It can be written as a sum of positive squares in 4 ways, for example, as 4919524 + 63107136 = 2218^2 + 7944^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130561 + ... + 131080.

It is an arithmetic number, because the mean of its divisors is an integer number (6410229).

Almost surely, 2^68026660 is an apocalyptic number.

It is an amenable number.

68026660 is an abundant number, since it is smaller than the sum of its proper divisors (85818836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68026660 is a wasteful number, since it uses less digits than its factorization.

68026660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261663 (or 261661 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 68026660 is about 8247.8275927665. The cubic root of 68026660 is about 408.2188448521.

It can be divided in two parts, 68026 and 660, that added together give a palindrome (68686).

The spelling of 68026660 in words is "sixty-eight million, twenty-six thousand, six hundred sixty".