61860 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.
It is a congruent number.
61860 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
261860 is an apocalyptic number.
61860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
61860 is a wasteful number, since it uses less digits than its factorization.
61860 is an evil number, because the sum of its binary digits is even.
The square root of 61860 is about 248.7167063146. The cubic root of 61860 is about 39.5491030636.
The spelling of 61860 in words is "sixty-one thousand, eight hundred sixty".