6610536081 has 6 divisors (see below), whose sum is σ = 9548552130. Its totient is φ = 4407024048.

The previous prime is 6610536061. The next prime is 6610536103. The reversal of 6610536081 is 1806350166.

It is a happy number.

6610536081 is a `hidden beast` number, since 6 + 610 + 5 + 36 + 0 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5082977025 + 1527559056 = 71295^2 + 39084^2 .

It is not a de Polignac number, because 6610536081 - 2¹¹ = 6610534033 is a prime.

It is a super-2 number, since 2×6610536081² = 87398374556405677122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6610536061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 367251996 + ... + 367252013.

It is an arithmetic number, because the mean of its divisors is an integer number (1591425355).

Almost surely, 2^6610536081 is an apocalyptic number.

It is an amenable number.

6610536081 is a deficient number, since it is larger than the sum of its proper divisors (2938016049).

6610536081 is a wasteful number, since it uses less digits than its factorization.

6610536081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734504015 (or 734504012 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 6610536081 is about 81305.2032836767. The cubic root of 6610536081 is about 1876.7750733442.

The spelling of 6610536081 in words is "six billion, six hundred ten million, five hundred thirty-six thousand, eighty-one".