906869647 has 2 divisors, whose sum is σ = 906869648. Its totient is φ = 906869646.

The previous prime is 906869627. The next prime is 906869651. The reversal of 906869647 is 746968609.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 906869647 - 2¹⁹ = 906345359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (906869617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453434823 + 453434824.

It is an arithmetic number, because the mean of its divisors is an integer number (453434824).

Almost surely, 2^906869647 is an apocalyptic number.

906869647 is a deficient number, since it is larger than the sum of its proper divisors (1).

906869647 is an equidigital number, since it uses as much as digits as its factorization.

906869647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The square root of 906869647 is about 30114.2764648264. The cubic root of 906869647 is about 967.9396687207.

The spelling of 906869647 in words is "nine hundred six million, eight hundred sixty-nine thousand, six hundred forty-seven".