2647467521 has 2 divisors, whose sum is σ = 2647467522. Its totient is φ = 2647467520.

The previous prime is 2647467503. The next prime is 2647467523. The reversal of 2647467521 is 1257647462.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1361241025 + 1286226496 = 36895^2 + 35864^2 .

It is a cyclic number.

It is not a de Polignac number, because 2647467521 - 2¹⁴ = 2647451137 is a prime.

Together with 2647467523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2647467523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1323733760 + 1323733761.

It is an arithmetic number, because the mean of its divisors is an integer number (1323733761).

Almost surely, 2^2647467521 is an apocalyptic number.

It is an amenable number.

2647467521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2647467521 is an equidigital number, since it uses as much as digits as its factorization.

2647467521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 44.

The square root of 2647467521 is about 51453.5472149394. The cubic root of 2647467521 is about 1383.3865437638.

The spelling of 2647467521 in words is "two billion, six hundred forty-seven million, four hundred sixty-seven thousand, five hundred twenty-one".