656773222 has 8 divisors (see below), whose sum is σ = 1125896976. Its totient is φ = 281474232.

The previous prime is 656773213. The next prime is 656773259. The reversal of 656773222 is 222377656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×656773222² = 862702130272522568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 23456173 + ... + 23456200.

It is an arithmetic number, because the mean of its divisors is an integer number (140737122).

Almost surely, 2^656773222 is an apocalyptic number.

656773222 is a deficient number, since it is larger than the sum of its proper divisors (469123754).

656773222 is a wasteful number, since it uses less digits than its factorization.

656773222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46912382.

The product of its digits is 211680, while the sum is 40.

The square root of 656773222 is about 25627.5871279370. The cubic root of 656773222 is about 869.2375501707.

The spelling of 656773222 in words is "six hundred fifty-six million, seven hundred seventy-three thousand, two hundred twenty-two".