6617604656 has 60 divisors (see below), whose sum is σ = 14362674480. Its totient is φ = 2948924160.

The previous prime is 6617604647. The next prime is 6617604661. The reversal of 6617604656 is 6564067166.

It is a super-2 number, since 2×6617604656² = 87585382766225756672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6617604656.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36221 + ... + 120611.

It is an arithmetic number, because the mean of its divisors is an integer number (239377908).

Almost surely, 2^6617604656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6617604656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7181337240).

6617604656 is an abundant number, since it is smaller than the sum of its proper divisors (7745069824).

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

6617604656 is a wasteful number, since it uses less digits than its factorization.

6617604656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84454 (or 84435 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 47.

The square root of 6617604656 is about 81348.6610584341. The cubic root of 6617604656 is about 1877.4437735104.

The spelling of 6617604656 in words is "six billion, six hundred seventeen million, six hundred four thousand, six hundred fifty-six".