3644542697 has 4 divisors (see below), whose sum is σ = 3649174416. Its totient is φ = 3639910980.

The previous prime is 3644542679. The next prime is 3644542711. The reversal of 3644542697 is 7962454463.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3644542697 - 2¹⁰ = 3644541673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3644542397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2314679 + ... + 2316252.

It is an arithmetic number, because the mean of its divisors is an integer number (912293604).

Almost surely, 2^3644542697 is an apocalyptic number.

It is an amenable number.

3644542697 is a deficient number, since it is larger than the sum of its proper divisors (4631719).

3644542697 is an equidigital number, since it uses as much as digits as its factorization.

3644542697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4631718.

The product of its digits is 4354560, while the sum is 50.

The square root of 3644542697 is about 60370.0480122387. The cubic root of 3644542697 is about 1538.9139890596.

The spelling of 3644542697 in words is "three billion, six hundred forty-four million, five hundred forty-two thousand, six hundred ninety-seven".