2650465661 has 2 divisors, whose sum is σ = 2650465662. Its totient is φ = 2650465660.

The previous prime is 2650465613. The next prime is 2650465729. The reversal of 2650465661 is 1665640562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2043582436 + 606883225 = 45206^2 + 24635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2650465661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2650465061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1325232830 + 1325232831.

It is an arithmetic number, because the mean of its divisors is an integer number (1325232831).

Almost surely, 2^2650465661 is an apocalyptic number.

It is an amenable number.

2650465661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2650465661 is an equidigital number, since it uses as much as digits as its factorization.

2650465661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 2650465661 is about 51482.6734057197. The cubic root of 2650465661 is about 1383.9085548090.

The spelling of 2650465661 in words is "two billion, six hundred fifty million, four hundred sixty-five thousand, six hundred sixty-one".