647672059 has 2 divisors, whose sum is σ = 647672060. Its totient is φ = 647672058.

The previous prime is 647672041. The next prime is 647672083. The reversal of 647672059 is 950276746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 647672059 - 2⁵ = 647672027 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (647672009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323836029 + 323836030.

It is an arithmetic number, because the mean of its divisors is an integer number (323836030).

Almost surely, 2^647672059 is an apocalyptic number.

647672059 is a deficient number, since it is larger than the sum of its proper divisors (1).

647672059 is an equidigital number, since it uses as much as digits as its factorization.

647672059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 647672059 is about 25449.4019379631. The cubic root of 647672059 is about 865.2037383028.

The spelling of 647672059 in words is "six hundred forty-seven million, six hundred seventy-two thousand, fifty-nine".