3549640684 has 24 divisors (see below), whose sum is σ = 6281489088. Its totient is φ = 1754991120.

The previous prime is 3549640673. The next prime is 3549640733. The reversal of 3549640684 is 4860469453.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 233599 + ... + 248329.

It is an arithmetic number, because the mean of its divisors is an integer number (261728712).

Almost surely, 2^3549640684 is an apocalyptic number.

It is an amenable number.

3549640684 is a deficient number, since it is larger than the sum of its proper divisors (2731848404).

3549640684 is a wasteful number, since it uses less digits than its factorization.

3549640684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15405 (or 15403 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 49.

The square root of 3549640684 is about 59578.8610498724. The cubic root of 3549640684 is about 1525.4388322695.

The spelling of 3549640684 in words is "three billion, five hundred forty-nine million, six hundred forty thousand, six hundred eighty-four".