6380985617 has 2 divisors, whose sum is σ = 6380985618. Its totient is φ = 6380985616.

The previous prime is 6380985599. The next prime is 6380985661. The reversal of 6380985617 is 7165890836.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3297515776 + 3083469841 = 57424^2 + 55529^2 .

It is a cyclic number.

It is not a de Polignac number, because 6380985617 - 2¹⁸ = 6380723473 is a prime.

It is not a weakly prime, because it can be changed into another prime (6380985917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3190492808 + 3190492809.

It is an arithmetic number, because the mean of its divisors is an integer number (3190492809).

Almost surely, 2^6380985617 is an apocalyptic number.

It is an amenable number.

6380985617 is a deficient number, since it is larger than the sum of its proper divisors (1).

6380985617 is an equidigital number, since it uses as much as digits as its factorization.

6380985617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 6380985617 is about 79881.0717066315. The cubic root of 6380985617 is about 1854.7950231101.

The spelling of 6380985617 in words is "six billion, three hundred eighty million, nine hundred eighty-five thousand, six hundred seventeen".