617896387 has 2 divisors, whose sum is σ = 617896388. Its totient is φ = 617896386.

The previous prime is 617896339. The next prime is 617896423. The reversal of 617896387 is 783698716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 617896387 - 2¹⁵ = 617863619 is a prime.

It is not a weakly prime, because it can be changed into another prime (617896327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308948193 + 308948194.

It is an arithmetic number, because the mean of its divisors is an integer number (308948194).

Almost surely, 2^617896387 is an apocalyptic number.

617896387 is a deficient number, since it is larger than the sum of its proper divisors (1).

617896387 is an equidigital number, since it uses as much as digits as its factorization.

617896387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 55.

The square root of 617896387 is about 24857.5217389023. The cubic root of 617896387 is about 851.7364212731.

The spelling of 617896387 in words is "six hundred seventeen million, eight hundred ninety-six thousand, three hundred eighty-seven".