3632644646 has 4 divisors (see below), whose sum is σ = 5448966972. Its totient is φ = 1816322322.

The previous prime is 3632644619. The next prime is 3632644669. The reversal of 3632644646 is 6464462363.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×3632644646² = 26392214248224930632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3632644597 and 3632644606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 908161160 + ... + 908161163.

It is an arithmetic number, because the mean of its divisors is an integer number (1362241743).

Almost surely, 2^3632644646 is an apocalyptic number.

3632644646 is a deficient number, since it is larger than the sum of its proper divisors (1816322326).

3632644646 is a wasteful number, since it uses less digits than its factorization.

3632644646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816322325.

The product of its digits is 1492992, while the sum is 44.

The square root of 3632644646 is about 60271.4247882029. The cubic root of 3632644646 is about 1537.2375063455.

The spelling of 3632644646 in words is "three billion, six hundred thirty-two million, six hundred forty-four thousand, six hundred forty-six".