664342710 has 64 divisors (see below), whose sum is σ = 1649756160. Its totient is φ = 171037440.

The previous prime is 664342661. The next prime is 664342727. The reversal of 664342710 is 17243466.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 751929 + ... + 752811.

It is an arithmetic number, because the mean of its divisors is an integer number (25777440).

Almost surely, 2^664342710 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664342710, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (824878080).

664342710 is an abundant number, since it is smaller than the sum of its proper divisors (985413450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664342710 is a wasteful number, since it uses less digits than its factorization.

664342710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 664342710 is about 25774.8464592905. The cubic root of 664342710 is about 872.5642013715.

The spelling of 664342710 in words is "six hundred sixty-four million, three hundred forty-two thousand, seven hundred ten".