647433053 has 4 divisors (see below), whose sum is σ = 647491680. Its totient is φ = 647374428.

The previous prime is 647433043. The next prime is 647433071. The reversal of 647433053 is 350334746.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-647433053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647433043) 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, 7175 + ... + 36692.

It is an arithmetic number, because the mean of its divisors is an integer number (161872920).

Almost surely, 2^647433053 is an apocalyptic number.

It is an amenable number.

647433053 is a deficient number, since it is larger than the sum of its proper divisors (58627).

647433053 is a wasteful number, since it uses less digits than its factorization.

647433053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58626.

The product of its (nonzero) digits is 90720, while the sum is 35.

The square root of 647433053 is about 25444.7057951158. The cubic root of 647433053 is about 865.0972984651.

Adding to 647433053 its reverse (350334746), we get a palindrome (997767799).

The spelling of 647433053 in words is "six hundred forty-seven million, four hundred thirty-three thousand, fifty-three".