664110340 has 24 divisors (see below), whose sum is σ = 1412288640. Its totient is φ = 262280928.

The previous prime is 664110331. The next prime is 664110341. The reversal of 664110340 is 43011466.

It is not an unprimeable number, because it can be changed into a prime (664110341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208582 + ... + 211741.

It is an arithmetic number, because the mean of its divisors is an integer number (58845360).

Almost surely, 2^664110340 is an apocalyptic number.

It is an amenable number.

664110340 is an abundant number, since it is smaller than the sum of its proper divisors (748178300).

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

664110340 is a wasteful number, since it uses less digits than its factorization.

664110340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420411 (or 420409 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 664110340 is about 25770.3383757373. The cubic root of 664110340 is about 872.4624559998.

The spelling of 664110340 in words is "six hundred sixty-four million, one hundred ten thousand, three hundred forty".