605664864 has 168 divisors, whose sum is σ = 2043735120. Its totient is φ = 173000448.

The previous prime is 605664863. The next prime is 605664907. The reversal of 605664864 is 468466506.

605664864 is a `hidden beast` number, since 6 + 0 + 566 + 4 + 86 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605664863) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 161442 + ... + 165150.

It is an arithmetic number, because the mean of its divisors is an integer number (12165090).

Almost surely, 2^605664864 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 605664864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1021867560).

605664864 is an abundant number, since it is smaller than the sum of its proper divisors (1438070256).

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

605664864 is an equidigital number, since it uses as much as digits as its factorization.

605664864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3744 (or 3721 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The square root of 605664864 is about 24610.2593241112. The cubic root of 605664864 is about 846.0787613408.

The spelling of 605664864 in words is "six hundred five million, six hundred sixty-four thousand, eight hundred sixty-four".