71198011 has 4 divisors (see below), whose sum is σ = 71676000. Its totient is φ = 70720024.

The previous prime is 71197991. The next prime is 71198033. The reversal of 71198011 is 11089117.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71198011 - 2⁹ = 71197499 is a prime.

It is a super-2 number, since 2×71198011² = 10138313540712242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71198051) 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, 238771 + ... + 239068.

It is an arithmetic number, because the mean of its divisors is an integer number (17919000).

Almost surely, 2^71198011 is an apocalyptic number.

71198011 is a deficient number, since it is larger than the sum of its proper divisors (477989).

71198011 is a wasteful number, since it uses less digits than its factorization.

71198011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477988.

The product of its (nonzero) digits is 504, while the sum is 28.

The square root of 71198011 is about 8437.8913835152. The cubic root of 71198011 is about 414.4663601131.

The spelling of 71198011 in words is "seventy-one million, one hundred ninety-eight thousand, eleven".