71198005 has 8 divisors (see below), whose sum is σ = 85491072. Its totient is φ = 56922768.

The previous prime is 71197991. The next prime is 71198033. The reversal of 71198005 is 50089117.

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

It is a cyclic number.

It is not a de Polignac number, because 71198005 - 2¹⁹ = 70673717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7024 + ... + 13846.

It is an arithmetic number, because the mean of its divisors is an integer number (10686384).

Almost surely, 2^71198005 is an apocalyptic number.

It is an amenable number.

71198005 is a deficient number, since it is larger than the sum of its proper divisors (14293067).

71198005 is a wasteful number, since it uses less digits than its factorization.

71198005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8915.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 71198005 is about 8437.8910279761. The cubic root of 71198005 is about 414.4663484704.

The spelling of 71198005 in words is "seventy-one million, one hundred ninety-eight thousand, five".