2196616656 has 160 divisors (see below), whose sum is σ = 6534081792. Its totient is φ = 630558720.

The previous prime is 2196616637. The next prime is 2196616661. The reversal of 2196616656 is 6566166912.

2196616656 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 586566 + ... + 590298.

Almost surely, 2^2196616656 is an apocalyptic number.

2196616656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2196616656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3267040896).

2196616656 is an abundant number, since it is smaller than the sum of its proper divisors (4337465136).

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

2196616656 is a wasteful number, since it uses less digits than its factorization.

2196616656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3821 (or 3815 counting only the distinct ones).

The product of its digits is 699840, while the sum is 48.

The square root of 2196616656 is about 46868.0771527913. The cubic root of 2196616656 is about 1299.9243853455.

The spelling of 2196616656 in words is "two billion, one hundred ninety-six million, six hundred sixteen thousand, six hundred fifty-six".