655918423 has 2 divisors, whose sum is σ = 655918424. Its totient is φ = 655918422.

The previous prime is 655918387. The next prime is 655918427. The reversal of 655918423 is 324819556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655918423 - 2²⁵ = 622363991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 655918423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655918427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327959211 + 327959212.

It is an arithmetic number, because the mean of its divisors is an integer number (327959212).

Almost surely, 2^655918423 is an apocalyptic number.

655918423 is a deficient number, since it is larger than the sum of its proper divisors (1).

655918423 is an equidigital number, since it uses as much as digits as its factorization.

655918423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 43.

The square root of 655918423 is about 25610.9043768470. The cubic root of 655918423 is about 868.8602784080.

The spelling of 655918423 in words is "six hundred fifty-five million, nine hundred eighteen thousand, four hundred twenty-three".