617713387 has 2 divisors, whose sum is σ = 617713388. Its totient is φ = 617713386.

The previous prime is 617713379. The next prime is 617713391. The reversal of 617713387 is 783317716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 617713387 - 2³ = 617713379 is a prime.

It is not a weakly prime, because it can be changed into another prime (617713337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308856693 + 308856694.

It is an arithmetic number, because the mean of its divisors is an integer number (308856694).

Almost surely, 2^617713387 is an apocalyptic number.

617713387 is a deficient number, since it is larger than the sum of its proper divisors (1).

617713387 is an equidigital number, since it uses as much as digits as its factorization.

617713387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 43.

The square root of 617713387 is about 24853.8404879407. The cubic root of 617713387 is about 851.6523278023.

The spelling of 617713387 in words is "six hundred seventeen million, seven hundred thirteen thousand, three hundred eighty-seven".