664610371226 has 8 divisors (see below), whose sum is σ = 998579858400. Its totient is φ = 331750418428.

The previous prime is 664610371171. The next prime is 664610371247. The reversal of 664610371226 is 622173016466.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277382096 + ... + 277384491.

It is an arithmetic number, because the mean of its divisors is an integer number (124822482300).

Almost surely, 2^664610371226 is an apocalyptic number.

664610371226 is a deficient number, since it is larger than the sum of its proper divisors (333969487174).

664610371226 is a wasteful number, since it uses less digits than its factorization.

664610371226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554767188.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 664610371226 in words is "six hundred sixty-four billion, six hundred ten million, three hundred seventy-one thousand, two hundred twenty-six".