3002656561 has 4 divisors (see below), whose sum is σ = 3005133172. Its totient is φ = 3000179952.

The previous prime is 3002656543. The next prime is 3002656567. The reversal of 3002656561 is 1656562003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1656562003 = 557 ⋅2974079.

It can be written as a sum of positive squares in 2 ways, for example, as 34586161 + 2968070400 = 5881^2 + 54480^2 .

It is a cyclic number.

It is not a de Polignac number, because 3002656561 - 2⁵ = 3002656529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3002656567) 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, 1236486 + ... + 1238911.

It is an arithmetic number, because the mean of its divisors is an integer number (751283293).

Almost surely, 2^3002656561 is an apocalyptic number.

It is an amenable number.

3002656561 is a deficient number, since it is larger than the sum of its proper divisors (2476611).

3002656561 is a wasteful number, since it uses less digits than its factorization.

3002656561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476610.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 3002656561 is about 54796.5013572947. The cubic root of 3002656561 is about 1442.6751584832.

The spelling of 3002656561 in words is "three billion, two million, six hundred fifty-six thousand, five hundred sixty-one".