422665650 has 144 divisors (see below), whose sum is σ = 1252330560. Its totient is φ = 101347200.

The previous prime is 422665643. The next prime is 422665657. The reversal of 422665650 is 56566224.

It is an interprime number because it is at equal distance from previous prime (422665643) and next prime (422665657).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422665657) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 509436 + ... + 510264.

It is an arithmetic number, because the mean of its divisors is an integer number (8696740).

Almost surely, 2^422665650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422665650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626165280).

422665650 is an abundant number, since it is smaller than the sum of its proper divisors (829664910).

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

422665650 is a wasteful number, since it uses less digits than its factorization.

422665650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 422665650 is about 20558.8338677076. The cubic root of 422665650 is about 750.4682409397.

The spelling of 422665650 in words is "four hundred twenty-two million, six hundred sixty-five thousand, six hundred fifty".