2197650 has 144 divisors (see below), whose sum is σ = 7124544. Its totient is φ = 443520.

The previous prime is 2197633. The next prime is 2197651. The reversal of 2197650 is 567912.

2197650 is nontrivially palindromic in base 4.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 95539 + ... + 95561.

It is an arithmetic number, because the mean of its divisors is an integer number (49476).

2^2197650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2197650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3562272).

2197650 is an abundant number, since it is smaller than the sum of its proper divisors (4926894).

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

2197650 is a wasteful number, since it uses less digits than its factorization.

2197650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 2197650 is about 1482.4473009183. The cubic root of 2197650 is about 130.0128192487.

The spelling of 2197650 in words is "two million, one hundred ninety-seven thousand, six hundred fifty".