617364493 has 2 divisors, whose sum is σ = 617364494. Its totient is φ = 617364492.

The previous prime is 617364487. The next prime is 617364509. The reversal of 617364493 is 394463716.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 375313129 + 242051364 = 19373^2 + 15558^2 .

It is a cyclic number.

It is not a de Polignac number, because 617364493 - 2¹³ = 617356301 is a prime.

It is a super-2 number, since 2×617364493² = 762277834434294098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (617364403) 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, 308682246 + 308682247.

It is an arithmetic number, because the mean of its divisors is an integer number (308682247).

Almost surely, 2^617364493 is an apocalyptic number.

It is an amenable number.

617364493 is a deficient number, since it is larger than the sum of its proper divisors (1).

617364493 is an equidigital number, since it uses as much as digits as its factorization.

617364493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 43.

The square root of 617364493 is about 24846.8205813138. The cubic root of 617364493 is about 851.4919555038.

The spelling of 617364493 in words is "six hundred seventeen million, three hundred sixty-four thousand, four hundred ninety-three".