617039971 has 2 divisors, whose sum is σ = 617039972. Its totient is φ = 617039970.

The previous prime is 617039963. The next prime is 617040013. The reversal of 617039971 is 179930716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 617039971 - 2³ = 617039963 is a prime.

It is not a weakly prime, because it can be changed into another prime (617039921) 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, 308519985 + 308519986.

It is an arithmetic number, because the mean of its divisors is an integer number (308519986).

Almost surely, 2^617039971 is an apocalyptic number.

617039971 is a deficient number, since it is larger than the sum of its proper divisors (1).

617039971 is an equidigital number, since it uses as much as digits as its factorization.

617039971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442, while the sum is 43.

The square root of 617039971 is about 24840.2892696522. The cubic root of 617039971 is about 851.3427317699.

The spelling of 617039971 in words is "six hundred seventeen million, thirty-nine thousand, nine hundred seventy-one".