68610880 has 56 divisors (see below), whose sum is σ = 175957992. Its totient is φ = 25331712.

The previous prime is 68610877. The next prime is 68610887. The reversal of 68610880 is 8801686.

It can be written as a sum of positive squares in 4 ways, for example, as 2286144 + 66324736 = 1512^2 + 8144^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68610887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4087 + ... + 12406.

It is an arithmetic number, because the mean of its divisors is an integer number (3142107).

Almost surely, 2^68610880 is an apocalyptic number.

It is an amenable number.

68610880 is an abundant number, since it is smaller than the sum of its proper divisors (107347112).

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

68610880 is a wasteful number, since it uses less digits than its factorization.

68610880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16523 (or 16513 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 68610880 is about 8283.1684758913. The cubic root of 68610880 is about 409.3841239153.

The spelling of 68610880 in words is "sixty-eight million, six hundred ten thousand, eight hundred eighty".