662621677117 has 2 divisors, whose sum is σ = 662621677118. Its totient is φ = 662621677116.

The previous prime is 662621677073. The next prime is 662621677127. The reversal of 662621677117 is 711776126266.

It is a happy number.

662621677117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 464052513796 + 198569163321 = 681214^2 + 445611^2 .

It is a cyclic number.

It is not a de Polignac number, because 662621677117 - 2¹¹ = 662621675069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662621677127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331310838558 + 331310838559.

It is an arithmetic number, because the mean of its divisors is an integer number (331310838559).

Almost surely, 2^662621677117 is an apocalyptic number.

It is an amenable number.

662621677117 is a deficient number, since it is larger than the sum of its proper divisors (1).

662621677117 is an equidigital number, since it uses as much as digits as its factorization.

662621677117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1778112, while the sum is 52.

The spelling of 662621677117 in words is "six hundred sixty-two billion, six hundred twenty-one million, six hundred seventy-seven thousand, one hundred seventeen".