647571061003 has 4 divisors (see below), whose sum is σ = 647572975768. Its totient is φ = 647569146240.

The previous prime is 647571060977. The next prime is 647571061009. The reversal of 647571061003 is 300160175746.

647571061003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-647571061003 is a prime.

It is a super-2 number, since 2×647571061003² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647571061009) 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, 299301 + ... + 1176742.

It is an arithmetic number, because the mean of its divisors is an integer number (161893243942).

Almost surely, 2^647571061003 is an apocalyptic number.

647571061003 is a deficient number, since it is larger than the sum of its proper divisors (1914765).

647571061003 is a wasteful number, since it uses less digits than its factorization.

647571061003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914764.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 647571061003 in words is "six hundred forty-seven billion, five hundred seventy-one million, sixty-one thousand, three".