2002656847 has 4 divisors (see below), whose sum is σ = 2005696440. Its totient is φ = 1999617256.

The previous prime is 2002656839. The next prime is 2002656853. The reversal of 2002656847 is 7486562002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7486562002 = 2 ⋅3743281001.

It is a cyclic number.

It is not a de Polignac number, because 2002656847 - 2³ = 2002656839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002656347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1518808 + ... + 1520125.

It is an arithmetic number, because the mean of its divisors is an integer number (501424110).

Almost surely, 2^2002656847 is an apocalyptic number.

2002656847 is a deficient number, since it is larger than the sum of its proper divisors (3039593).

2002656847 is an equidigital number, since it uses as much as digits as its factorization.

2002656847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3039592.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 2002656847 is about 44751.0541440087. The cubic root of 2002656847 is about 1260.4787059435.

The spelling of 2002656847 in words is "two billion, two million, six hundred fifty-six thousand, eight hundred forty-seven".