2206197656 has 48 divisors (see below), whose sum is σ = 4487218560. Its totient is φ = 1016446080.

The previous prime is 2206197629. The next prime is 2206197667. The reversal of 2206197656 is 6567916022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1044041 + ... + 1046151.

It is an arithmetic number, because the mean of its divisors is an integer number (93483720).

Almost surely, 2^2206197656 is an apocalyptic number.

2206197656 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 2206197656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2243609280).

2206197656 is an abundant number, since it is smaller than the sum of its proper divisors (2281020904).

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

2206197656 is a wasteful number, since it uses less digits than its factorization.

2206197656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916 (or 2899 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 2206197656 is about 46970.1783688331. The cubic root of 2206197656 is about 1301.8116076052.

The spelling of 2206197656 in words is "two billion, two hundred six million, one hundred ninety-seven thousand, six hundred fifty-six".