655166273 has 2 divisors, whose sum is σ = 655166274. Its totient is φ = 655166272.

The previous prime is 655166251. The next prime is 655166333. The reversal of 655166273 is 372661556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 568917904 + 86248369 = 23852^2 + 9287^2 .

It is a cyclic number.

It is not a de Polignac number, because 655166273 - 2¹⁴ = 655149889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 655166273.

It is not a weakly prime, because it can be changed into another prime (655166573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327583136 + 327583137.

It is an arithmetic number, because the mean of its divisors is an integer number (327583137).

Almost surely, 2^655166273 is an apocalyptic number.

It is an amenable number.

655166273 is a deficient number, since it is larger than the sum of its proper divisors (1).

655166273 is an equidigital number, since it uses as much as digits as its factorization.

655166273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 41.

The square root of 655166273 is about 25596.2159898685. The cubic root of 655166273 is about 868.5280403369.

The spelling of 655166273 in words is "six hundred fifty-five million, one hundred sixty-six thousand, two hundred seventy-three".