6616613540 has 24 divisors (see below), whose sum is σ = 14090594112. Its totient is φ = 2609368160.

The previous prime is 6616613501. The next prime is 6616613543. The reversal of 6616613540 is 453166166.

It is a super-2 number, since 2×6616613540² = 87559149475422663200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6616613494 and 6616613503.

It is not an unprimeable number, because it can be changed into a prime (6616613543) 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, 2328374 + ... + 2331213.

It is an arithmetic number, because the mean of its divisors is an integer number (587108088).

Almost surely, 2^6616613540 is an apocalyptic number.

It is an amenable number.

6616613540 is an abundant number, since it is smaller than the sum of its proper divisors (7473980572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6616613540 is a wasteful number, since it uses less digits than its factorization.

6616613540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4659667 (or 4659665 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 6616613540 is about 81342.5690521267. The cubic root of 6616613540 is about 1877.3500408301.

The spelling of 6616613540 in words is "six billion, six hundred sixteen million, six hundred thirteen thousand, five hundred forty".