2647090691 has 6 divisors (see below), whose sum is σ = 3079268820. Its totient is φ = 2268934836.

The previous prime is 2647090643. The next prime is 2647090703. The reversal of 2647090691 is 1960907462.

2647090691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2647090691 - 2¹⁴ = 2647074307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2647090891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27011081 + ... + 27011178.

It is an arithmetic number, because the mean of its divisors is an integer number (513211470).

Almost surely, 2^2647090691 is an apocalyptic number.

2647090691 is a deficient number, since it is larger than the sum of its proper divisors (432178129).

2647090691 is an equidigital number, since it uses as much as digits as its factorization.

2647090691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54022273 (or 54022266 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 2647090691 is about 51449.8852379672. The cubic root of 2647090691 is about 1383.3209054028.

The spelling of 2647090691 in words is "two billion, six hundred forty-seven million, ninety thousand, six hundred ninety-one".