71195993 has 4 divisors (see below), whose sum is σ = 77668368. Its totient is φ = 64723620.

The previous prime is 71195977. The next prime is 71196007. The reversal of 71195993 is 39959117.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71195993 - 2⁴ = 71195977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71195953) 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, 3236171 + ... + 3236192.

It is an arithmetic number, because the mean of its divisors is an integer number (19417092).

Almost surely, 2^71195993 is an apocalyptic number.

It is an amenable number.

71195993 is a deficient number, since it is larger than the sum of its proper divisors (6472375).

71195993 is a wasteful number, since it uses less digits than its factorization.

71195993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6472374.

The product of its digits is 76545, while the sum is 44.

The square root of 71195993 is about 8437.7718030295. The cubic root of 71195993 is about 414.4624442686.

The spelling of 71195993 in words is "seventy-one million, one hundred ninety-five thousand, nine hundred ninety-three".