617330641 has 2 divisors, whose sum is σ = 617330642. Its totient is φ = 617330640.

The previous prime is 617330599. The next prime is 617330663. The reversal of 617330641 is 146033716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423536400 + 193794241 = 20580^2 + 13921^2 .

It is a cyclic number.

It is not a de Polignac number, because 617330641 - 2⁷ = 617330513 is a prime.

It is not a weakly prime, because it can be changed into another prime (617336641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308665320 + 308665321.

It is an arithmetic number, because the mean of its divisors is an integer number (308665321).

Almost surely, 2^617330641 is an apocalyptic number.

It is an amenable number.

617330641 is a deficient number, since it is larger than the sum of its proper divisors (1).

617330641 is an equidigital number, since it uses as much as digits as its factorization.

617330641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 617330641 is about 24846.1393580572. The cubic root of 617330641 is about 851.4763919089.

The spelling of 617330641 in words is "six hundred seventeen million, three hundred thirty thousand, six hundred forty-one".