71026668 has 36 divisors (see below), whose sum is σ = 187347888. Its totient is φ = 22645920.

The previous prime is 71026667. The next prime is 71026699. The reversal of 71026668 is 86662017.

It is a happy number.

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 not an unprimeable number, because it can be changed into a prime (71026667) 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, 42063 + ... + 43718.

It is an arithmetic number, because the mean of its divisors is an integer number (5204108).

Almost surely, 2^71026668 is an apocalyptic number.

It is an amenable number.

71026668 is an abundant number, since it is smaller than the sum of its proper divisors (116321220).

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

71026668 is a wasteful number, since it uses less digits than its factorization.

71026668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85814 (or 85809 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 71026668 is about 8427.7320792726. The cubic root of 71026668 is about 414.1336122685.

The spelling of 71026668 in words is "seventy-one million, twenty-six thousand, six hundred sixty-eight".