71080986 has 16 divisors (see below), whose sum is σ = 143186400. Its totient is φ = 23522928.

The previous prime is 71080973. The next prime is 71080987. The reversal of 71080986 is 68908017.

It is not an unprimeable number, because it can be changed into a prime (71080987) 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, 41781 + ... + 43448.

It is an arithmetic number, because the mean of its divisors is an integer number (8949150).

Almost surely, 2^71080986 is an apocalyptic number.

71080986 is an abundant number, since it is smaller than the sum of its proper divisors (72105414).

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

71080986 is a wasteful number, since it uses less digits than its factorization.

71080986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85373.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 71080986 is about 8430.9540385415. The cubic root of 71080986 is about 414.2391556194.

The spelling of 71080986 in words is "seventy-one million, eighty thousand, nine hundred eighty-six".