655771471 has 2 divisors, whose sum is σ = 655771472. Its totient is φ = 655771470.

The previous prime is 655771399. The next prime is 655771477. The reversal of 655771471 is 174177556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655771471 - 2¹⁵ = 655738703 is a prime.

It is a super-3 number, since 3×655771471³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655771477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327885735 + 327885736.

It is an arithmetic number, because the mean of its divisors is an integer number (327885736).

Almost surely, 2^655771471 is an apocalyptic number.

655771471 is a deficient number, since it is larger than the sum of its proper divisors (1).

655771471 is an equidigital number, since it uses as much as digits as its factorization.

655771471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 205800, while the sum is 43.

The square root of 655771471 is about 25608.0352819188. The cubic root of 655771471 is about 868.7953870599.

It can be divided in two parts, 655 and 771471, that multiplied together give a palindrome (505313505).

The spelling of 655771471 in words is "six hundred fifty-five million, seven hundred seventy-one thousand, four hundred seventy-one".