71081798 has 8 divisors (see below), whose sum is σ = 108634608. Its totient is φ = 34870264.

The previous prime is 71081797. The next prime is 71081807. The reversal of 71081798 is 89718017.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71081797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335186 + ... + 335397.

It is an arithmetic number, because the mean of its divisors is an integer number (13579326).

Almost surely, 2^71081798 is an apocalyptic number.

71081798 is a deficient number, since it is larger than the sum of its proper divisors (37552810).

71081798 is a wasteful number, since it uses less digits than its factorization.

71081798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670638.

The product of its (nonzero) digits is 28224, while the sum is 41.

The square root of 71081798 is about 8431.0021942827. The cubic root of 71081798 is about 414.2407329794.

The spelling of 71081798 in words is "seventy-one million, eighty-one thousand, seven hundred ninety-eight".