6557905696 has 48 divisors (see below), whose sum is σ = 13288212000. Its totient is φ = 3184465408.

The previous prime is 6557905649. The next prime is 6557905709. The reversal of 6557905696 is 6965097556.

It is a super-2 number, since 2×6557905696² = 86012254235258488832, 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 6557905696.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135780 + ... + 177628.

It is an arithmetic number, because the mean of its divisors is an integer number (276837750).

Almost surely, 2^6557905696 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 6557905696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6644106000).

6557905696 is an abundant number, since it is smaller than the sum of its proper divisors (6730306304).

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

6557905696 is a wasteful number, since it uses less digits than its factorization.

6557905696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42001 (or 41993 counting only the distinct ones).

The product of its (nonzero) digits is 15309000, while the sum is 58.

The square root of 6557905696 is about 80980.8971054285. The cubic root of 6557905696 is about 1871.7810912356.

The spelling of 6557905696 in words is "six billion, five hundred fifty-seven million, nine hundred five thousand, six hundred ninety-six".