6616610648 has 16 divisors (see below), whose sum is σ = 12434803080. Its totient is φ = 3300663168.

The previous prime is 6616610633. The next prime is 6616610659. The reversal of 6616610648 is 8460166166.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6616610599 and 6616610608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 951590 + ... + 958517.

Almost surely, 2^6616610648 is an apocalyptic number.

It is an amenable number.

6616610648 is a deficient number, since it is larger than the sum of its proper divisors (5818192432).

6616610648 is a wasteful number, since it uses less digits than its factorization.

6616610648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910546 (or 1910542 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 6616610648 is about 81342.5512754548. The cubic root of 6616610648 is about 1877.3497673116.

The spelling of 6616610648 in words is "six billion, six hundred sixteen million, six hundred ten thousand, six hundred forty-eight".