612974687329 has 9 divisors (see below), whose sum is σ = 614915413203. Its totient is φ = 611040074712.

The previous prime is 612974687327. The next prime is 612974687359. The reversal of 612974687329 is 923786479216.

The square root of 612974687329 is 782927.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 333188700625 + 279785986704 = 577225^2 + 528948^2 .

It is not a de Polignac number, because 612974687329 - 2¹ = 612974687327 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612974687321) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 292030722 + ... + 292032820.

Almost surely, 2^612974687329 is an apocalyptic number.

612974687329 is the 782927-th square number.

612974687329 is the 391464-th centered octagonal number.

It is an amenable number.

612974687329 is a deficient number, since it is larger than the sum of its proper divisors (1940725874).

612974687329 is an frugal number, since it uses more digits than its factorization.

612974687329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4944 (or 2472 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 64.

Multiplying 612974687329 by its sum of digits (64), we get a square (39230379989056 = 6263416²).

The spelling of 612974687329 in words is "six hundred twelve billion, nine hundred seventy-four million, six hundred eighty-seven thousand, three hundred twenty-nine".