664651007002 has 8 divisors (see below), whose sum is σ = 996982920000. Its totient is φ = 332323367004.

The previous prime is 664651006951. The next prime is 664651007023. The reversal of 664651007002 is 200700156466.

It is a happy number.

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

It is a super-2 number, since 2×664651007002² (a number of 24 digits) contains 22 as substring.

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, 646002 + ... + 1321597.

It is an arithmetic number, because the mean of its divisors is an integer number (124622865000).

Almost surely, 2^664651007002 is an apocalyptic number.

664651007002 is a deficient number, since it is larger than the sum of its proper divisors (332331912998).

664651007002 is a wasteful number, since it uses less digits than its factorization.

664651007002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136500.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 664651007002 in words is "six hundred sixty-four billion, six hundred fifty-one million, seven thousand, two".