3612647621 has 8 divisors (see below), whose sum is σ = 4024923264. Its totient is φ = 3214347520.

The previous prime is 3612647617. The next prime is 3612647659. The reversal of 3612647621 is 1267462163.

It is a happy number.

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 3612647621 - 2² = 3612647617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3612647671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3493340 + ... + 3494373.

It is an arithmetic number, because the mean of its divisors is an integer number (503115408).

Almost surely, 2^3612647621 is an apocalyptic number.

It is an amenable number.

3612647621 is a deficient number, since it is larger than the sum of its proper divisors (412275643).

3612647621 is a wasteful number, since it uses less digits than its factorization.

3612647621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6987771.

The product of its digits is 72576, while the sum is 38.

The square root of 3612647621 is about 60105.3044331363. The cubic root of 3612647621 is about 1534.4115802153.

The spelling of 3612647621 in words is "three billion, six hundred twelve million, six hundred forty-seven thousand, six hundred twenty-one".