6615652201 has 8 divisors (see below), whose sum is σ = 6634590984. Its totient is φ = 6596739840.

The previous prime is 6615652157. The next prime is 6615652249. The reversal of 6615652201 is 1022565166.

It can be written as a sum of positive squares in 4 ways, for example, as 516198400 + 6099453801 = 22720^2 + 78099^2 .

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 6615652201 - 2²⁷ = 6481434473 is a prime.

It is a super-2 number, since 2×6615652201² = 87533708089192288802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6615652291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562881 + ... + 574513.

It is an arithmetic number, because the mean of its divisors is an integer number (829323873).

Almost surely, 2^6615652201 is an apocalyptic number.

It is an amenable number.

6615652201 is a deficient number, since it is larger than the sum of its proper divisors (18938783).

6615652201 is a wasteful number, since it uses less digits than its factorization.

6615652201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13211.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 6615652201 is about 81336.6596375829. The cubic root of 6615652201 is about 1877.2591153028.

The spelling of 6615652201 in words is "six billion, six hundred fifteen million, six hundred fifty-two thousand, two hundred one".