3640834068 has 24 divisors (see below), whose sum is σ = 8639268960. Its totient is φ = 1193041440.

The previous prime is 3640834061. The next prime is 3640834073. The reversal of 3640834068 is 8604380463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640834061) 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, 2570503 + ... + 2571918.

It is an arithmetic number, because the mean of its divisors is an integer number (359969540).

Almost surely, 2^3640834068 is an apocalyptic number.

It is an amenable number.

3640834068 is an abundant number, since it is smaller than the sum of its proper divisors (4998434892).

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

3640834068 is a wasteful number, since it uses less digits than its factorization.

3640834068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5142487 (or 5142485 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The square root of 3640834068 is about 60339.3243913122. The cubic root of 3640834068 is about 1538.3918203917.

The spelling of 3640834068 in words is "three billion, six hundred forty million, eight hundred thirty-four thousand, sixty-eight".