71233668 has 180 divisors, whose sum is σ = 216289920. Its totient is φ = 20386080.

The previous prime is 71233649. The next prime is 71233681. The reversal of 71233668 is 86633217.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 901653 + ... + 901731.

Almost surely, 2^71233668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71233668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108144960).

71233668 is an abundant number, since it is smaller than the sum of its proper divisors (145056252).

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

71233668 is a wasteful number, since it uses less digits than its factorization.

71233668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 118 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 71233668 is about 8440.0040284351. The cubic root of 71233668 is about 414.5355388273.

The spelling of 71233668 in words is "seventy-one million, two hundred thirty-three thousand, six hundred sixty-eight".