3647576641 has 4 divisors (see below), whose sum is σ = 3658028500. Its totient is φ = 3637124784.

The previous prime is 3647576629. The next prime is 3647576663. The reversal of 3647576641 is 1466757463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1466757463 = 3011 ⋅487133.

It can be written as a sum of positive squares in 2 ways, for example, as 3211602241 + 435974400 = 56671^2 + 20880^2 .

It is a cyclic number.

It is not a de Polignac number, because 3647576641 - 2¹⁵ = 3647543873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3647576671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5225406 + ... + 5226103.

It is an arithmetic number, because the mean of its divisors is an integer number (914507125).

Almost surely, 2^3647576641 is an apocalyptic number.

It is an amenable number.

3647576641 is a deficient number, since it is larger than the sum of its proper divisors (10451859).

3647576641 is a wasteful number, since it uses less digits than its factorization.

3647576641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10451858.

The product of its digits is 2540160, while the sum is 49.

The square root of 3647576641 is about 60395.1706761393. The cubic root of 3647576641 is about 1539.3408998564.

The spelling of 3647576641 in words is "three billion, six hundred forty-seven million, five hundred seventy-six thousand, six hundred forty-one".