664470549071 has 8 divisors (see below), whose sum is σ = 783891523584. Its totient is φ = 551173727160.

The previous prime is 664470549053. The next prime is 664470549073. The reversal of 664470549071 is 170945074466.

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

It is not a de Polignac number, because 664470549071 - 2⁶ = 664470549007 is a prime.

It is a super-3 number, since 3×664470549071³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664470549073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1531037915 + ... + 1531038348.

It is an arithmetic number, because the mean of its divisors is an integer number (97986440448).

Almost surely, 2^664470549071 is an apocalyptic number.

664470549071 is a deficient number, since it is larger than the sum of its proper divisors (119420974513).

664470549071 is a wasteful number, since it uses less digits than its factorization.

664470549071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062076301.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 664470549071 in words is "six hundred sixty-four billion, four hundred seventy million, five hundred forty-nine thousand, seventy-one".