2946657647 has 2 divisors, whose sum is σ = 2946657648. Its totient is φ = 2946657646.

The previous prime is 2946657613. The next prime is 2946657661. The reversal of 2946657647 is 7467566492.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2946657647 - 2⁸ = 2946657391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2946657592 and 2946657601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2946657677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1473328823 + 1473328824.

It is an arithmetic number, because the mean of its divisors is an integer number (1473328824).

Almost surely, 2^2946657647 is an apocalyptic number.

2946657647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2946657647 is an equidigital number, since it uses as much as digits as its factorization.

2946657647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 56.

The square root of 2946657647 is about 54283.1248824163. The cubic root of 2946657647 is about 1433.6502902742.

The spelling of 2946657647 in words is "two billion, nine hundred forty-six million, six hundred fifty-seven thousand, six hundred forty-seven".