664710364692 has 192 divisors, whose sum is σ = 1891814400000. Its totient is φ = 200163899520.

The previous prime is 664710364691. The next prime is 664710364727. The reversal of 664710364692 is 296463017466.

It is a happy number.

664710364692 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664710364691) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 162957109 + ... + 162961187.

It is an arithmetic number, because the mean of its divisors is an integer number (9853200000).

Almost surely, 2^664710364692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664710364692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (945907200000).

664710364692 is an abundant number, since it is smaller than the sum of its proper divisors (1227104035308).

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

664710364692 is a wasteful number, since it uses less digits than its factorization.

664710364692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931 (or 4923 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 664710364692 in words is "six hundred sixty-four billion, seven hundred ten million, three hundred sixty-four thousand, six hundred ninety-two".