68543980 has 24 divisors (see below), whose sum is σ = 147834288. Its totient is φ = 26676288.

The previous prime is 68543957. The next prime is 68543987. The reversal of 68543980 is 8934586.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (68543987) 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, 45574 + ... + 47053.

It is an arithmetic number, because the mean of its divisors is an integer number (6159762).

Almost surely, 2^68543980 is an apocalyptic number.

It is an amenable number.

68543980 is an abundant number, since it is smaller than the sum of its proper divisors (79290308).

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

68543980 is a wasteful number, since it uses less digits than its factorization.

68543980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92673 (or 92671 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 68543980 is about 8279.1291812606. The cubic root of 68543980 is about 409.2510220694.

The spelling of 68543980 in words is "sixty-eight million, five hundred forty-three thousand, nine hundred eighty".