653404273 has 2 divisors, whose sum is σ = 653404274. Its totient is φ = 653404272.

The previous prime is 653404223. The next prime is 653404277. The reversal of 653404273 is 372404356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350887824 + 302516449 = 18732^2 + 17393^2 .

It is a cyclic number.

It is not a de Polignac number, because 653404273 - 2⁹ = 653403761 is a prime.

It is not a weakly prime, because it can be changed into another prime (653404277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326702136 + 326702137.

It is an arithmetic number, because the mean of its divisors is an integer number (326702137).

Almost surely, 2^653404273 is an apocalyptic number.

It is an amenable number.

653404273 is a deficient number, since it is larger than the sum of its proper divisors (1).

653404273 is an equidigital number, since it uses as much as digits as its factorization.

653404273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 34.

The square root of 653404273 is about 25561.7736669426. The cubic root of 653404273 is about 867.7487367082.

The spelling of 653404273 in words is "six hundred fifty-three million, four hundred four thousand, two hundred seventy-three".