2215656630 has 96 divisors (see below), whose sum is σ = 6320021760. Its totient is φ = 534085440.

The previous prime is 2215656613. The next prime is 2215656643. The reversal of 2215656630 is 366565122.

It is a happy number.

2215656630 is a `hidden beast` number, since 2 + 2 + 1 + 565 + 66 + 30 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 170959 + ... + 183461.

It is an arithmetic number, because the mean of its divisors is an integer number (65833560).

Almost surely, 2^2215656630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2215656630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3160010880).

2215656630 is an abundant number, since it is smaller than the sum of its proper divisors (4104365130).

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

2215656630 is a wasteful number, since it uses less digits than its factorization.

2215656630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12706 (or 12703 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 2215656630 is about 47070.7619441198. The cubic root of 2215656630 is about 1303.6694413947.

The spelling of 2215656630 in words is "two billion, two hundred fifteen million, six hundred fifty-six thousand, six hundred thirty".