655190273 has 2 divisors, whose sum is σ = 655190274. Its totient is φ = 655190272.

The previous prime is 655190267. The next prime is 655190309. The reversal of 655190273 is 372091556.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 434013889 + 221176384 = 20833^2 + 14872^2 .

It is a cyclic number.

It is not a de Polignac number, because 655190273 - 2²⁴ = 638413057 is a prime.

It is not a weakly prime, because it can be changed into another prime (655190773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327595136 + 327595137.

It is an arithmetic number, because the mean of its divisors is an integer number (327595137).

Almost surely, 2^655190273 is an apocalyptic number.

It is an amenable number.

655190273 is a deficient number, since it is larger than the sum of its proper divisors (1).

655190273 is an equidigital number, since it uses as much as digits as its factorization.

655190273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 655190273 is about 25596.6848048727. The cubic root of 655190273 is about 868.5386454913.

The spelling of 655190273 in words is "six hundred fifty-five million, one hundred ninety thousand, two hundred seventy-three".