617471999 has 2 divisors, whose sum is σ = 617472000. Its totient is φ = 617471998.

The previous prime is 617471989. The next prime is 617472071. The reversal of 617471999 is 999174716.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-617471999 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 617471999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (617471969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308735999 + 308736000.

It is an arithmetic number, because the mean of its divisors is an integer number (308736000).

Almost surely, 2^617471999 is an apocalyptic number.

617471999 is a deficient number, since it is larger than the sum of its proper divisors (1).

617471999 is an equidigital number, since it uses as much as digits as its factorization.

617471999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 53.

The square root of 617471999 is about 24848.9838625244. The cubic root of 617471999 is about 851.5413780530.

The spelling of 617471999 in words is "six hundred seventeen million, four hundred seventy-one thousand, nine hundred ninety-nine".