3644363670 has 64 divisors (see below), whose sum is σ = 8934672384. Its totient is φ = 951125760.

The previous prime is 3644363669. The next prime is 3644363741. The reversal of 3644363670 is 763634463.

3644363670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 280539 + ... + 293241.

It is an arithmetic number, because the mean of its divisors is an integer number (139604256).

Almost surely, 2^3644363670 is an apocalyptic number.

3644363670 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3644363670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4467336192).

3644363670 is an abundant number, since it is smaller than the sum of its proper divisors (5290308714).

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

3644363670 is a wasteful number, since it uses less digits than its factorization.

3644363670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12917.

The product of its (nonzero) digits is 653184, while the sum is 42.

The square root of 3644363670 is about 60368.5652471549. The cubic root of 3644363670 is about 1538.8887905012. Note that the first 3 decimals are identical.

The spelling of 3644363670 in words is "three billion, six hundred forty-four million, three hundred sixty-three thousand, six hundred seventy".