664610670834 has 32 divisors (see below), whose sum is σ = 1477419269184. Its totient is φ = 197597225280.

The previous prime is 664610670833. The next prime is 664610670917. The reversal of 664610670834 is 438076016466.

664610670834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (664610670833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94995169 + ... + 95002164.

It is an arithmetic number, because the mean of its divisors is an integer number (46169352162).

Almost surely, 2^664610670834 is an apocalyptic number.

664610670834 is an abundant number, since it is smaller than the sum of its proper divisors (812808598350).

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

664610670834 is a wasteful number, since it uses less digits than its factorization.

664610670834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189997402.

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 664610670834 in words is "six hundred sixty-four billion, six hundred ten million, six hundred seventy thousand, eight hundred thirty-four".