662500123 has 2 divisors, whose sum is σ = 662500124. Its totient is φ = 662500122.

The previous prime is 662500067. The next prime is 662500169. The reversal of 662500123 is 321005266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 662500123 - 2²¹ = 660402971 is a prime.

It is not a weakly prime, because it can be changed into another prime (662503123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331250061 + 331250062.

It is an arithmetic number, because the mean of its divisors is an integer number (331250062).

Almost surely, 2^662500123 is an apocalyptic number.

662500123 is a deficient number, since it is larger than the sum of its proper divisors (1).

662500123 is an equidigital number, since it uses as much as digits as its factorization.

662500123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 662500123 is about 25739.0777418306. The cubic root of 662500123 is about 871.7567545828.

Adding to 662500123 its reverse (321005266), we get a palindrome (983505389).

The spelling of 662500123 in words is "six hundred sixty-two million, five hundred thousand, one hundred twenty-three".