71630622 has 128 divisors (see below), whose sum is σ = 196577280. Its totient is φ = 18869760.

The previous prime is 71630617. The next prime is 71630623. The reversal of 71630622 is 22603617.

It is a happy number.

71630622 is a `hidden beast` number, since 7 + 1 + 6 + 30 + 622 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71630623) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 456168 + ... + 456324.

It is an arithmetic number, because the mean of its divisors is an integer number (1535760).

Almost surely, 2^71630622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71630622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98288640).

71630622 is an abundant number, since it is smaller than the sum of its proper divisors (124946658).

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

71630622 is a wasteful number, since it uses less digits than its factorization.

71630622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 71630622 is about 8463.4875790067. The cubic root of 71630622 is about 415.3041212023.

The spelling of 71630622 in words is "seventy-one million, six hundred thirty thousand, six hundred twenty-two".