68660320 has 24 divisors (see below), whose sum is σ = 162210384. Its totient is φ = 27464064.

The previous prime is 68660303. The next prime is 68660321. The reversal of 68660320 is 2306686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68660321) 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 3 ways as a sum of consecutive naturals, for example, 214404 + ... + 214723.

It is an arithmetic number, because the mean of its divisors is an integer number (6758766).

Almost surely, 2^68660320 is an apocalyptic number.

It is an amenable number.

68660320 is an abundant number, since it is smaller than the sum of its proper divisors (93550064).

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

68660320 is a wasteful number, since it uses less digits than its factorization.

68660320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429142 (or 429134 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 68660320 is about 8286.1523036932. The cubic root of 68660320 is about 409.4824323832.

The spelling of 68660320 in words is "sixty-eight million, six hundred sixty thousand, three hundred twenty".