61923 has 4 divisors (see below), whose sum is σ = 82568. Its totient is φ = 41280.

The previous prime is 61909. The next prime is 61927. The reversal of 61923 is 32916.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61923 - 2⁸ = 61667 is a prime.

It is a D-number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 61923.

It is not an unprimeable number, because it can be changed into a prime (61927) 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, 10318 + ... + 10323.

It is an arithmetic number, because the mean of its divisors is an integer number (20642).

2⁶¹⁹²³ is an apocalyptic number.

61923 is a deficient number, since it is larger than the sum of its proper divisors (20645).

61923 is a wasteful number, since it uses less digits than its factorization.

61923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20644.

The product of its digits is 324, while the sum is 21.

The square root of 61923 is about 248.8433242022. The cubic root of 61923 is about 39.5625244891.

The spelling of 61923 in words is "sixty-one thousand, nine hundred twenty-three".