23977 has 2 divisors, whose sum is σ = 23978. Its totient is φ = 23976.

The previous prime is 23971. The next prime is 23981. The reversal of 23977 is 77932.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19881 + 4096 = 141^2 + 64^2 .

It is a cyclic number.

It is not a de Polignac number, because 23977 - 2¹¹ = 21929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11988 + 11989.

It is an arithmetic number, because the mean of its divisors is an integer number (11989).

2²³⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

23977 is a deficient number, since it is larger than the sum of its proper divisors (1).

23977 is an equidigital number, since it uses as much as digits as its factorization.

23977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2646, while the sum is 28.

The square root of 23977 is about 154.8450838742. The cubic root of 23977 is about 28.8357740888.

It can be divided in two parts, 23 and 977, that added together give a cube (1000 = 10³).

The spelling of 23977 in words is "twenty-three thousand, nine hundred seventy-seven".