3645317247 has 16 divisors (see below), whose sum is σ = 5710147968. Its totient is φ = 2039338080.

The previous prime is 3645317243. The next prime is 3645317261. The reversal of 3645317247 is 7427135463.

It is not a de Polignac number, because 3645317247 - 2² = 3645317243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3645317199 and 3645317208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645317243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4248193 + ... + 4249050.

It is an arithmetic number, because the mean of its divisors is an integer number (356884248).

Almost surely, 2^3645317247 is an apocalyptic number.

3645317247 is a deficient number, since it is larger than the sum of its proper divisors (2064830721).

3645317247 is a wasteful number, since it uses less digits than its factorization.

3645317247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8497270.

The product of its digits is 423360, while the sum is 42.

The square root of 3645317247 is about 60376.4626903564. The cubic root of 3645317247 is about 1539.0229996635.

The spelling of 3645317247 in words is "three billion, six hundred forty-five million, three hundred seventeen thousand, two hundred forty-seven".