71080668 has 36 divisors (see below), whose sum is σ = 180107928. Its totient is φ = 23636640.

The previous prime is 71080661. The next prime is 71080697. The reversal of 71080668 is 86608017.

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

It is a super-2 number, since 2×71080668² = 10104922726652448, which contains 22 as substring.

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 (71080661) 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, 14455 + ... + 18737.

It is an arithmetic number, because the mean of its divisors is an integer number (5002998).

Almost surely, 2^71080668 is an apocalyptic number.

It is an amenable number.

71080668 is an abundant number, since it is smaller than the sum of its proper divisors (109027260).

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

71080668 is a wasteful number, since it uses less digits than its factorization.

71080668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4754 (or 4749 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 71080668 is about 8430.9351794448. The cubic root of 71080668 is about 414.2385378815.

The spelling of 71080668 in words is "seventy-one million, eighty thousand, six hundred sixty-eight".