647385370 has 16 divisors (see below), whose sum is σ = 1215959040. Its totient is φ = 247695184.

The previous prime is 647385341. The next prime is 647385373. The reversal of 647385370 is 73583746.

It is not an unprimeable number, because it can be changed into a prime (647385373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1407130 + ... + 1407589.

It is an arithmetic number, because the mean of its divisors is an integer number (75997440).

Almost surely, 2^647385370 is an apocalyptic number.

647385370 is a deficient number, since it is larger than the sum of its proper divisors (568573670).

647385370 is a wasteful number, since it uses less digits than its factorization.

647385370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2814749.

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 647385370 is about 25443.7687853038. The cubic root of 647385370 is about 865.0760600030.

The spelling of 647385370 in words is "six hundred forty-seven million, three hundred eighty-five thousand, three hundred seventy".