647620332 has 24 divisors (see below), whose sum is σ = 1543266816. Its totient is φ = 211280208.

The previous prime is 647620319. The next prime is 647620333. The reversal of 647620332 is 233026746.

It is a junction number, because it is equal to n+sod(n) for n = 647620293 and 647620302.

It is not an unprimeable number, because it can be changed into a prime (647620333) 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 7 ways as a sum of consecutive naturals, for example, 573568 + ... + 574695.

It is an arithmetic number, because the mean of its divisors is an integer number (64302784).

Almost surely, 2^647620332 is an apocalyptic number.

It is an amenable number.

647620332 is an abundant number, since it is smaller than the sum of its proper divisors (895646484).

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

647620332 is a wasteful number, since it uses less digits than its factorization.

647620332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148317 (or 1148315 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 33.

The square root of 647620332 is about 25448.3856462448. The cubic root of 647620332 is about 865.1807042253.

The spelling of 647620332 in words is "six hundred forty-seven million, six hundred twenty thousand, three hundred thirty-two".