617350397 has 2 divisors, whose sum is σ = 617350398. Its totient is φ = 617350396.

The previous prime is 617350381. The next prime is 617350411. The reversal of 617350397 is 793053716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381850681 + 235499716 = 19541^2 + 15346^2 .

It is a cyclic number.

It is not a de Polignac number, because 617350397 - 2⁴ = 617350381 is a prime.

It is a super-2 number, since 2×617350397² = 762243025352115218, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (617350297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308675198 + 308675199.

It is an arithmetic number, because the mean of its divisors is an integer number (308675199).

Almost surely, 2^617350397 is an apocalyptic number.

It is an amenable number.

617350397 is a deficient number, since it is larger than the sum of its proper divisors (1).

617350397 is an equidigital number, since it uses as much as digits as its factorization.

617350397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070, while the sum is 41.

The square root of 617350397 is about 24846.5369216718. The cubic root of 617350397 is about 851.4854748795.

The spelling of 617350397 in words is "six hundred seventeen million, three hundred fifty thousand, three hundred ninety-seven".