61873 has 4 divisors (see below), whose sum is σ = 70720. Its totient is φ = 53028.

The previous prime is 61871. The next prime is 61879. The reversal of 61873 is 37816.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61873 - 2¹ = 61871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4413 + ... + 4426.

It is an arithmetic number, because the mean of its divisors is an integer number (17680).

2⁶¹⁸⁷³ is an apocalyptic number.

It is an amenable number.

61873 is a deficient number, since it is larger than the sum of its proper divisors (8847).

61873 is an equidigital number, since it uses as much as digits as its factorization.

61873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8846.

The product of its digits is 1008, while the sum is 25.

The square root of 61873 is about 248.7428390929. The cubic root of 61873 is about 39.5518733100.

The spelling of 61873 in words is "sixty-one thousand, eight hundred seventy-three".