3521604779 has 8 divisors (see below), whose sum is σ = 4390572288. Its totient is φ = 2744107560.

The previous prime is 3521604733. The next prime is 3521604787. The reversal of 3521604779 is 9774061253.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3521604779 - 2⁸ = 3521604523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3521604379) by changing a digit.

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, 22867487 + ... + 22867640.

It is an arithmetic number, because the mean of its divisors is an integer number (548821536).

Almost surely, 2^3521604779 is an apocalyptic number.

3521604779 is a deficient number, since it is larger than the sum of its proper divisors (868967509).

3521604779 is a wasteful number, since it uses less digits than its factorization.

3521604779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45735145.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 3521604779 is about 59343.1106279406. The cubic root of 3521604779 is about 1521.4121195712.

The spelling of 3521604779 in words is "three billion, five hundred twenty-one million, six hundred four thousand, seven hundred seventy-nine".