68618580 has 24 divisors (see below), whose sum is σ = 192132192. Its totient is φ = 18298272.

The previous prime is 68618569. The next prime is 68618581. The reversal of 68618580 is 8581686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68618581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571762 + ... + 571881.

It is an arithmetic number, because the mean of its divisors is an integer number (8005508).

Almost surely, 2^68618580 is an apocalyptic number.

68618580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68618580 is an abundant number, since it is smaller than the sum of its proper divisors (123513612).

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

68618580 is a wasteful number, since it uses less digits than its factorization.

68618580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143655 (or 1143653 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 68618580 is about 8283.6332608343. The cubic root of 68618580 is about 409.3994380066.

The spelling of 68618580 in words is "sixty-eight million, six hundred eighteen thousand, five hundred eighty".