68560820 has 24 divisors (see below), whose sum is σ = 145407528. Its totient is φ = 27152000.

The previous prime is 68560819. The next prime is 68560831. The reversal of 68560820 is 2806586.

It can be written as a sum of positive squares in 4 ways, for example, as 22619536 + 45941284 = 4756^2 + 6778^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14951 + ... + 18990.

It is an arithmetic number, because the mean of its divisors is an integer number (6058647).

Almost surely, 2^68560820 is an apocalyptic number.

It is an amenable number.

68560820 is an abundant number, since it is smaller than the sum of its proper divisors (76846708).

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

68560820 is a wasteful number, since it uses less digits than its factorization.

68560820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34051 (or 34049 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 68560820 is about 8280.1461339761. The cubic root of 68560820 is about 409.2845344843.

The spelling of 68560820 in words is "sixty-eight million, five hundred sixty thousand, eight hundred twenty".