3640719264 has 192 divisors, whose sum is σ = 12013940736. Its totient is φ = 939654144.

The previous prime is 3640719149. The next prime is 3640719293. The reversal of 3640719264 is 4629170463.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 406159 + ... + 415025.

It is an arithmetic number, because the mean of its divisors is an integer number (62572608).

Almost surely, 2^3640719264 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 3640719264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6006970368).

3640719264 is an abundant number, since it is smaller than the sum of its proper divisors (8373221472).

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

3640719264 is a wasteful number, since it uses less digits than its factorization.

3640719264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8947 (or 8939 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 3640719264 is about 60338.3730639135. The cubic root of 3640719264 is about 1538.3756505262.

The spelling of 3640719264 in words is "three billion, six hundred forty million, seven hundred nineteen thousand, two hundred sixty-four".