647245222 has 64 divisors (see below), whose sum is σ = 1143072000. Its totient is φ = 272308608.

The previous prime is 647245201. The next prime is 647245253. The reversal of 647245222 is 222542746.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1544529 + ... + 1544947.

It is an arithmetic number, because the mean of its divisors is an integer number (17860500).

Almost surely, 2^647245222 is an apocalyptic number.

647245222 is a deficient number, since it is larger than the sum of its proper divisors (495826778).

647245222 is a wasteful number, since it uses less digits than its factorization.

647245222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565.

The product of its digits is 53760, while the sum is 34.

The square root of 647245222 is about 25441.0145631026. The cubic root of 647245222 is about 865.0136307117.

Adding to 647245222 its reverse (222542746), we get a palindrome (869787968).

The spelling of 647245222 in words is "six hundred forty-seven million, two hundred forty-five thousand, two hundred twenty-two".