647653012 has 12 divisors (see below), whose sum is σ = 1200063060. Its totient is φ = 304777856.

The previous prime is 647653009. The next prime is 647653049. The reversal of 647653012 is 210356746.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 547372816 + 100280196 = 23396^2 + 10014^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4762087 + ... + 4762222.

It is an arithmetic number, because the mean of its divisors is an integer number (100005255).

Almost surely, 2^647653012 is an apocalyptic number.

It is an amenable number.

647653012 is a deficient number, since it is larger than the sum of its proper divisors (552410048).

647653012 is a wasteful number, since it uses less digits than its factorization.

647653012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9524330 (or 9524328 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 647653012 is about 25449.0277220958. The cubic root of 647653012 is about 865.1952568000.

The spelling of 647653012 in words is "six hundred forty-seven million, six hundred fifty-three thousand, twelve".