71144622 has 16 divisors (see below), whose sum is σ = 158099280. Its totient is φ = 23714856.

The previous prime is 71144617. The next prime is 71144629. The reversal of 71144622 is 22644117.

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 (71144629) 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, 658693 + ... + 658800.

It is an arithmetic number, because the mean of its divisors is an integer number (9881205).

Almost surely, 2^71144622 is an apocalyptic number.

71144622 is an abundant number, since it is smaller than the sum of its proper divisors (86954658).

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

71144622 is a wasteful number, since it uses less digits than its factorization.

71144622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317504 (or 1317498 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 71144622 is about 8434.7271443717. The cubic root of 71144622 is about 414.3627360675.

Adding to 71144622 its reverse (22644117), we get a palindrome (93788739).

The spelling of 71144622 in words is "seventy-one million, one hundred forty-four thousand, six hundred twenty-two".