655397461 has 2 divisors, whose sum is σ = 655397462. Its totient is φ = 655397460.

The previous prime is 655397459. The next prime is 655397497. The reversal of 655397461 is 164793556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 505800100 + 149597361 = 22490^2 + 12231^2 .

It is a cyclic number.

It is not a de Polignac number, because 655397461 - 2¹ = 655397459 is a prime.

Together with 655397459, 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 (655397161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327698730 + 327698731.

It is an arithmetic number, because the mean of its divisors is an integer number (327698731).

Almost surely, 2^655397461 is an apocalyptic number.

It is an amenable number.

655397461 is a deficient number, since it is larger than the sum of its proper divisors (1).

655397461 is an equidigital number, since it uses as much as digits as its factorization.

655397461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 46.

The square root of 655397461 is about 25600.7316497010. The cubic root of 655397461 is about 868.6301872552.

The spelling of 655397461 in words is "six hundred fifty-five million, three hundred ninety-seven thousand, four hundred sixty-one".