647198222 has 16 divisors (see below), whose sum is σ = 1093215744. Its totient is φ = 284691000.

The previous prime is 647198221. The next prime is 647198267. The reversal of 647198222 is 222891746.

647198222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×647198222² = 837731077119922568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 647198222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647198221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473804 + ... + 475167.

It is an arithmetic number, because the mean of its divisors is an integer number (68325984).

Almost surely, 2^647198222 is an apocalyptic number.

647198222 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

647198222 is a deficient number, since it is larger than the sum of its proper divisors (446017522).

647198222 is a wasteful number, since it uses less digits than its factorization.

647198222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949015.

The product of its digits is 96768, while the sum is 41.

The square root of 647198222 is about 25440.0908410328. The cubic root of 647198222 is about 864.9926924216.

The spelling of 647198222 in words is "six hundred forty-seven million, one hundred ninety-eight thousand, two hundred twenty-two".