65570023 has 2 divisors, whose sum is σ = 65570024. Its totient is φ = 65570022.

The previous prime is 65570017. The next prime is 65570039. The reversal of 65570023 is 32007556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65570023 - 2¹³ = 65561831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65569973 and 65570000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65570093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32785011 + 32785012.

It is an arithmetic number, because the mean of its divisors is an integer number (32785012).

Almost surely, 2^65570023 is an apocalyptic number.

65570023 is a deficient number, since it is larger than the sum of its proper divisors (1).

65570023 is an equidigital number, since it uses as much as digits as its factorization.

65570023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 65570023 is about 8097.5319079334. The cubic root of 65570023 is about 403.2444932548.

Adding to 65570023 its reverse (32007556), we get a palindrome (97577579).

The spelling of 65570023 in words is "sixty-five million, five hundred seventy thousand, twenty-three".