3621497644 has 12 divisors (see below), whose sum is σ = 6445038600. Its totient is φ = 1780058048.

The previous prime is 3621497599. The next prime is 3621497687. The reversal of 3621497644 is 4467941263.

It is a junction number, because it is equal to n+sod(n) for n = 3621497594 and 3621497603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7672429 + ... + 7672900.

It is an arithmetic number, because the mean of its divisors is an integer number (537086550).

Almost surely, 2^3621497644 is an apocalyptic number.

It is an amenable number.

3621497644 is a deficient number, since it is larger than the sum of its proper divisors (2823540956).

3621497644 is a wasteful number, since it uses less digits than its factorization.

3621497644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15345392 (or 15345390 counting only the distinct ones).

The product of its digits is 870912, while the sum is 46.

The square root of 3621497644 is about 60178.8803817419. The cubic root of 3621497644 is about 1535.6635248171.

The spelling of 3621497644 in words is "three billion, six hundred twenty-one million, four hundred ninety-seven thousand, six hundred forty-four".