2210655640 has 32 divisors (see below), whose sum is σ = 4975512480. Its totient is φ = 883988992.

The previous prime is 2210655607. The next prime is 2210655641. The reversal of 2210655640 is 465560122.

2210655640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210655641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167109 + ... + 179851.

It is an arithmetic number, because the mean of its divisors is an integer number (155484765).

Almost surely, 2^2210655640 is an apocalyptic number.

2210655640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2210655640 is an abundant number, since it is smaller than the sum of its proper divisors (2764856840).

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

2210655640 is a wasteful number, since it uses less digits than its factorization.

2210655640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17091 (or 17087 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 2210655640 is about 47017.6098924648. The cubic root of 2210655640 is about 1302.6878589147.

The spelling of 2210655640 in words is "two billion, two hundred ten million, six hundred fifty-five thousand, six hundred forty".