23000639 has 2 divisors, whose sum is σ = 23000640. Its totient is φ = 23000638.

The previous prime is 23000633. The next prime is 23000641. The reversal of 23000639 is 93600032.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23000639 - 2¹⁶ = 22935103 is a prime.

Together with 23000641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23000633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11500319 + 11500320.

It is an arithmetic number, because the mean of its divisors is an integer number (11500320).

Almost surely, 2^23000639 is an apocalyptic number.

23000639 is a deficient number, since it is larger than the sum of its proper divisors (1).

23000639 is an equidigital number, since it uses as much as digits as its factorization.

23000639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 23000639 is about 4795.8981432053. The cubic root of 23000639 is about 284.3893316289.

The spelling of 23000639 in words is "twenty-three million, six hundred thirty-nine", and thus it is an aban number.