3204645864 has 192 divisors, whose sum is σ = 9630720000. Its totient is φ = 885499776.

The previous prime is 3204645859. The next prime is 3204645869. The reversal of 3204645864 is 4685464023.

It is an interprime number because it is at equal distance from previous prime (3204645859) and next prime (3204645869).

It is a super-2 number, since 2×3204645864² = 20539510227304612992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (3204645869) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6421887 + ... + 6422385.

It is an arithmetic number, because the mean of its divisors is an integer number (50160000).

Almost surely, 2^3204645864 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 3204645864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4815360000).

3204645864 is an abundant number, since it is smaller than the sum of its proper divisors (6426074136).

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

3204645864 is a wasteful number, since it uses less digits than its factorization.

3204645864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 42.

The square root of 3204645864 is about 56609.5916254481. The cubic root of 3204645864 is about 1474.3254008327.

The spelling of 3204645864 in words is "three billion, two hundred four million, six hundred forty-five thousand, eight hundred sixty-four".