647647059 has 4 divisors (see below), whose sum is σ = 863529416. Its totient is φ = 431764704.

The previous prime is 647647051. The next prime is 647647067. The reversal of 647647059 is 950746746.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (647647051) and next prime (647647067).

It is not a de Polignac number, because 647647059 - 2³ = 647647051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 647646999 and 647647017.

It is not an unprimeable number, because it can be changed into a prime (647647051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107941174 + ... + 107941179.

It is an arithmetic number, because the mean of its divisors is an integer number (215882354).

Almost surely, 2^647647059 is an apocalyptic number.

647647059 is a deficient number, since it is larger than the sum of its proper divisors (215882357).

647647059 is a wasteful number, since it uses less digits than its factorization.

647647059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215882356.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The square root of 647647059 is about 25448.9107625454. The cubic root of 647647059 is about 865.1926059345.

It can be divided in two parts, 6476 and 47059, that added together give a palindrome (53535).

The spelling of 647647059 in words is "six hundred forty-seven million, six hundred forty-seven thousand, fifty-nine".