617012857 has 2 divisors, whose sum is σ = 617012858. Its totient is φ = 617012856.

The previous prime is 617012839. The next prime is 617012861. The reversal of 617012857 is 758210716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 560221561 + 56791296 = 23669^2 + 7536^2 .

It is a cyclic number.

It is not a de Polignac number, because 617012857 - 2¹¹ = 617010809 is a prime.

It is not a weakly prime, because it can be changed into another prime (617012827) 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, 308506428 + 308506429.

It is an arithmetic number, because the mean of its divisors is an integer number (308506429).

Almost surely, 2^617012857 is an apocalyptic number.

It is an amenable number.

617012857 is a deficient number, since it is larger than the sum of its proper divisors (1).

617012857 is an equidigital number, since it uses as much as digits as its factorization.

617012857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 617012857 is about 24839.7434970653. The cubic root of 617012857 is about 851.3302616728.

The spelling of 617012857 in words is "six hundred seventeen million, twelve thousand, eight hundred fifty-seven".