2658605461 has 2 divisors, whose sum is σ = 2658605462. Its totient is φ = 2658605460.

The previous prime is 2658605459. The next prime is 2658605471. The reversal of 2658605461 is 1645068562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2509008100 + 149597361 = 50090^2 + 12231^2 .

It is a cyclic number.

It is not a de Polignac number, because 2658605461 - 2¹ = 2658605459 is a prime.

Together with 2658605459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2658605471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1329302730 + 1329302731.

It is an arithmetic number, because the mean of its divisors is an integer number (1329302731).

Almost surely, 2^2658605461 is an apocalyptic number.

It is an amenable number.

2658605461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2658605461 is an equidigital number, since it uses as much as digits as its factorization.

2658605461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 43.

The square root of 2658605461 is about 51561.6665847798. Note that the first 3 decimals coincide. The cubic root of 2658605461 is about 1385.3238063508.

The spelling of 2658605461 in words is "two billion, six hundred fifty-eight million, six hundred five thousand, four hundred sixty-one".