647275027 has 16 divisors (see below), whose sum is σ = 748154880. Its totient is φ = 548521632.

The previous prime is 647275021. The next prime is 647275037. The reversal of 647275027 is 720572746.

It is a cyclic number.

It is not a de Polignac number, because 647275027 - 2¹¹ = 647272979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647275021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 657978 + ... + 658960.

It is an arithmetic number, because the mean of its divisors is an integer number (46759680).

Almost surely, 2^647275027 is an apocalyptic number.

647275027 is a deficient number, since it is larger than the sum of its proper divisors (100879853).

647275027 is a wasteful number, since it uses less digits than its factorization.

647275027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962.

The product of its (nonzero) digits is 164640, while the sum is 40.

The square root of 647275027 is about 25441.6003230929. The cubic root of 647275027 is about 865.0269081809.

The spelling of 647275027 in words is "six hundred forty-seven million, two hundred seventy-five thousand, twenty-seven".