664723305401570 has 32 divisors (see below), whose sum is σ = 1197153428613120. Its totient is φ = 265744552564800.

The previous prime is 664723305401531. The next prime is 664723305401591. The reversal of 664723305401570 is 75104503327466.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2039172095 + ... + 2039498045.

It is an arithmetic number, because the mean of its divisors is an integer number (37411044644160).

Almost surely, 2^{664723305401570} is an apocalyptic number.

664723305401570 is a deficient number, since it is larger than the sum of its proper divisors (532430123211550).

664723305401570 is a wasteful number, since it uses less digits than its factorization.

664723305401570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436370.

The product of its (nonzero) digits is 12700800, while the sum is 53.

The spelling of 664723305401570 in words is "six hundred sixty-four trillion, seven hundred twenty-three billion, three hundred five million, four hundred one thousand, five hundred seventy".