647535612 has 12 divisors (see below), whose sum is σ = 1510916456. Its totient is φ = 215845200.

The previous prime is 647535611. The next prime is 647535613. The reversal of 647535612 is 216535746.

It is an interprime number because it is at equal distance from previous prime (647535611) and next prime (647535613).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647535611) 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 in 3 ways as a sum of consecutive naturals, for example, 26980639 + ... + 26980662.

Almost surely, 2^647535612 is an apocalyptic number.

It is an amenable number.

647535612 is an abundant number, since it is smaller than the sum of its proper divisors (863380844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647535612 is a wasteful number, since it uses less digits than its factorization.

647535612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53961308 (or 53961306 counting only the distinct ones).

The product of its digits is 151200, while the sum is 39.

The square root of 647535612 is about 25446.7210461387. The cubic root of 647535612 is about 865.1429756869.

The spelling of 647535612 in words is "six hundred forty-seven million, five hundred thirty-five thousand, six hundred twelve".