2102664677 has 2 divisors, whose sum is σ = 2102664678. Its totient is φ = 2102664676.

The previous prime is 2102664673. The next prime is 2102664679. The reversal of 2102664677 is 7764662012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1750501921 + 352162756 = 41839^2 + 18766^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102664677 - 2² = 2102664673 is a prime.

Together with 2102664679, 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 (2102664671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051332338 + 1051332339.

It is an arithmetic number, because the mean of its divisors is an integer number (1051332339).

Almost surely, 2^2102664677 is an apocalyptic number.

It is an amenable number.

2102664677 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102664677 is an equidigital number, since it uses as much as digits as its factorization.

2102664677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 2102664677 is about 45854.8217421025. The cubic root of 2102664677 is about 1281.1205757128.

The spelling of 2102664677 in words is "two billion, one hundred two million, six hundred sixty-four thousand, six hundred seventy-seven".