6615606064 has 40 divisors (see below), whose sum is σ = 12876332112. Its totient is φ = 3292723200.

The previous prime is 6615606061. The next prime is 6615606073. The reversal of 6615606064 is 4606065166.

It is a super-3 number, since 3×6615606064³ (a number of 30 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6615606061) 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, 4259112 + ... + 4260664.

Almost surely, 2^6615606064 is an apocalyptic number.

It is an amenable number.

6615606064 is a deficient number, since it is larger than the sum of its proper divisors (6260726048).

6615606064 is a wasteful number, since it uses less digits than its factorization.

6615606064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605 (or 2599 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 6615606064 is about 81336.3760195892. The cubic root of 6615606064 is about 1877.2547513438.

The spelling of 6615606064 in words is "six billion, six hundred fifteen million, six hundred six thousand, sixty-four".