3640330464 has 96 divisors (see below), whose sum is σ = 9807557760. Its totient is φ = 1181655552.

The previous prime is 3640330459. The next prime is 3640330469. The reversal of 3640330464 is 4640330463.

It is an interprime number because it is at equal distance from previous prime (3640330459) and next prime (3640330469).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640330469) 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, 1604659 + ... + 1606925.

It is an arithmetic number, because the mean of its divisors is an integer number (102162060).

Almost surely, 2^3640330464 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 3640330464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4903778880).

3640330464 is an abundant number, since it is smaller than the sum of its proper divisors (6167227296).

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

3640330464 is a wasteful number, since it uses less digits than its factorization.

3640330464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712 (or 2704 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 33.

The square root of 3640330464 is about 60335.1511475690. The cubic root of 3640330464 is about 1538.3208864625.

Subtracting 3640330464 from its reverse (4640330463), we obtain a palindrome (999999999).

The spelling of 3640330464 in words is "three billion, six hundred forty million, three hundred thirty thousand, four hundred sixty-four".