2159760647 has 16 divisors (see below), whose sum is σ = 2490808320. Its totient is φ = 1852056000.

The previous prime is 2159760643. The next prime is 2159760677. The reversal of 2159760647 is 7460679512.

It is a cyclic number.

It is not a de Polignac number, because 2159760647 - 2² = 2159760643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159760641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26522 + ... + 70872.

It is an arithmetic number, because the mean of its divisors is an integer number (155675520).

Almost surely, 2^2159760647 is an apocalyptic number.

2159760647 is a deficient number, since it is larger than the sum of its proper divisors (331047673).

2159760647 is a wasteful number, since it uses less digits than its factorization.

2159760647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44614.

The product of its (nonzero) digits is 635040, while the sum is 47.

The square root of 2159760647 is about 46473.2250548636. The cubic root of 2159760647 is about 1292.6130649955.

The spelling of 2159760647 in words is "two billion, one hundred fifty-nine million, seven hundred sixty thousand, six hundred forty-seven".