71107668 has 36 divisors (see below), whose sum is σ = 190319220. Its totient is φ = 22308096.

The previous prime is 71107667. The next prime is 71107679. The reversal of 71107668 is 86670117.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31945104 + 39162564 = 5652^2 + 6258^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71107667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57483 + ... + 58706.

It is an arithmetic number, because the mean of its divisors is an integer number (5286645).

Almost surely, 2^71107668 is an apocalyptic number.

It is an amenable number.

71107668 is an abundant number, since it is smaller than the sum of its proper divisors (119211552).

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

71107668 is a wasteful number, since it uses less digits than its factorization.

71107668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116216 (or 116211 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 71107668 is about 8432.5362732692. The cubic root of 71107668 is about 414.2909807609.

The spelling of 71107668 in words is "seventy-one million, one hundred seven thousand, six hundred sixty-eight".