2715223661 has 2 divisors, whose sum is σ = 2715223662. Its totient is φ = 2715223660.

The previous prime is 2715223619. The next prime is 2715223717. The reversal of 2715223661 is 1663225172.

2715223661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1421742436 + 1293481225 = 37706^2 + 35965^2 .

It is a cyclic number.

It is not a de Polignac number, because 2715223661 - 2⁶ = 2715223597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2715223361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1357611830 + 1357611831.

It is an arithmetic number, because the mean of its divisors is an integer number (1357611831).

Almost surely, 2^2715223661 is an apocalyptic number.

It is an amenable number.

2715223661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2715223661 is an equidigital number, since it uses as much as digits as its factorization.

2715223661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 2715223661 is about 52107.8080617483. The cubic root of 2715223661 is about 1395.0888568503.

The spelling of 2715223661 in words is "two billion, seven hundred fifteen million, two hundred twenty-three thousand, six hundred sixty-one".