61983 has 12 divisors (see below), whose sum is σ = 91728. Its totient is φ = 40320.

The previous prime is 61981. The next prime is 61987. The reversal of 61983 is 38916.

It is not a de Polignac number, because 61983 - 2¹ = 61981 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 591 + ... + 687.

It is an arithmetic number, because the mean of its divisors is an integer number (7644).

2⁶¹⁹⁸³ is an apocalyptic number.

61983 is a deficient number, since it is larger than the sum of its proper divisors (29745).

61983 is a wasteful number, since it uses less digits than its factorization.

61983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 171 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 61983 is about 248.9638527980. The cubic root of 61983 is about 39.5752983383.

The spelling of 61983 in words is "sixty-one thousand, nine hundred eighty-three".