655780033 has 2 divisors, whose sum is σ = 655780034. Its totient is φ = 655780032.

The previous prime is 655780031. The next prime is 655780087. The reversal of 655780033 is 330087556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 654745744 + 1034289 = 25588^2 + 1017^2 .

It is a cyclic number.

It is not a de Polignac number, because 655780033 - 2¹ = 655780031 is a prime.

Together with 655780031, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 655779974 and 655780001.

It is not a weakly prime, because it can be changed into another prime (655780031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327890016 + 327890017.

It is an arithmetic number, because the mean of its divisors is an integer number (327890017).

Almost surely, 2^655780033 is an apocalyptic number.

It is an amenable number.

655780033 is a deficient number, since it is larger than the sum of its proper divisors (1).

655780033 is an equidigital number, since it uses as much as digits as its factorization.

655780033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 655780033 is about 25608.2024554634. The cubic root of 655780033 is about 868.7991681504.

The spelling of 655780033 in words is "six hundred fifty-five million, seven hundred eighty thousand, thirty-three".