5977985647 has 2 divisors, whose sum is σ = 5977985648. Its totient is φ = 5977985646.

The previous prime is 5977985633. The next prime is 5977985687. The reversal of 5977985647 is 7465897795.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5977985647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5977985617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2988992823 + 2988992824.

It is an arithmetic number, because the mean of its divisors is an integer number (2988992824).

Almost surely, 2^5977985647 is an apocalyptic number.

5977985647 is a deficient number, since it is larger than the sum of its proper divisors (1).

5977985647 is an equidigital number, since it uses as much as digits as its factorization.

5977985647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 133358400, while the sum is 67.

The square root of 5977985647 is about 77317.4343017149. The cubic root of 5977985647 is about 1814.8954951503.

The spelling of 5977985647 in words is "five billion, nine hundred seventy-seven million, nine hundred eighty-five thousand, six hundred forty-seven".