3661213603 has 8 divisors (see below), whose sum is σ = 3811677248. Its totient is φ = 3513461184.

The previous prime is 3661213573. The next prime is 3661213609. The reversal of 3661213603 is 3063121663.

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 3661213603 - 2⁵ = 3661213571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3661213609) 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, 675051 + ... + 680452.

It is an arithmetic number, because the mean of its divisors is an integer number (476459656).

Almost surely, 2^3661213603 is an apocalyptic number.

3661213603 is a deficient number, since it is larger than the sum of its proper divisors (150463645).

3661213603 is a wasteful number, since it uses less digits than its factorization.

3661213603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355613.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 3661213603 is about 60507.9631370946. The cubic root of 3661213603 is about 1541.2568593385.

The spelling of 3661213603 in words is "three billion, six hundred sixty-one million, two hundred thirteen thousand, six hundred three".