23780017 has 2 divisors, whose sum is σ = 23780018. Its totient is φ = 23780016.

The previous prime is 23779997. The next prime is 23780021. The reversal of 23780017 is 71008732.

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., 21077281 + 2702736 = 4591^2 + 1644^2 .

It is a cyclic number.

It is not a de Polignac number, because 23780017 - 2¹¹ = 23777969 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23780917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11890008 + 11890009.

It is an arithmetic number, because the mean of its divisors is an integer number (11890009).

Almost surely, 2^23780017 is an apocalyptic number.

It is an amenable number.

23780017 is a deficient number, since it is larger than the sum of its proper divisors (1).

23780017 is an equidigital number, since it uses as much as digits as its factorization.

23780017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 23780017 is about 4876.4758791570. The cubic root of 23780017 is about 287.5659009610.

Adding to 23780017 its reverse (71008732), we get a palindrome (94788749).

The spelling of 23780017 in words is "twenty-three million, seven hundred eighty thousand, seventeen".