3553685644 has 24 divisors (see below), whose sum is σ = 6619269888. Its totient is φ = 1663560960.

The previous prime is 3553685617. The next prime is 3553685657. The reversal of 3553685644 is 4465863553.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123819 + ... + 149794.

It is an arithmetic number, because the mean of its divisors is an integer number (275802912).

Almost surely, 2^3553685644 is an apocalyptic number.

3553685644 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

3553685644 is a deficient number, since it is larger than the sum of its proper divisors (3065584244).

3553685644 is a wasteful number, since it uses less digits than its factorization.

3553685644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273825 (or 273823 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 49.

The square root of 3553685644 is about 59612.7976528530. The cubic root of 3553685644 is about 1526.0180455202.

The spelling of 3553685644 in words is "three billion, five hundred fifty-three million, six hundred eighty-five thousand, six hundred forty-four".