61798 has 12 divisors (see below), whose sum is σ = 103068. Its totient is φ = 27560.

The previous prime is 61781. The next prime is 61813. The reversal of 61798 is 89716.

It is an Ulam number.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

61798 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1140 + ... + 1192.

It is an arithmetic number, because the mean of its divisors is an integer number (8589).

2⁶¹⁷⁹⁸ is an apocalyptic number.

61798 is a deficient number, since it is larger than the sum of its proper divisors (41270).

61798 is a wasteful number, since it uses less digits than its factorization.

61798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 66 counting only the distinct ones).

The product of its digits is 3024, while the sum is 31.

The square root of 61798 is about 248.5920352706. The cubic root of 61798 is about 39.5358857770.

The spelling of 61798 in words is "sixty-one thousand, seven hundred ninety-eight".