3644572705 has 16 divisors (see below), whose sum is σ = 4500949824. Its totient is φ = 2831008320.

The previous prime is 3644572699. The next prime is 3644572717. The reversal of 3644572705 is 5072754463.

It is not a de Polignac number, because 3644572705 - 2¹⁵ = 3644539937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70774 + ... + 110896.

It is an arithmetic number, because the mean of its divisors is an integer number (281309364).

Almost surely, 2^3644572705 is an apocalyptic number.

It is an amenable number.

3644572705 is a deficient number, since it is larger than the sum of its proper divisors (856377119).

3644572705 is a wasteful number, since it uses less digits than its factorization.

3644572705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40656.

The product of its (nonzero) digits is 705600, while the sum is 43.

The square root of 3644572705 is about 60370.2965455695. The cubic root of 3644572705 is about 1538.9182126901.

The spelling of 3644572705 in words is "three billion, six hundred forty-four million, five hundred seventy-two thousand, seven hundred five".