71750197 has 4 divisors (see below), whose sum is σ = 71898016. Its totient is φ = 71602380.

The previous prime is 71750191. The next prime is 71750201. The reversal of 71750197 is 79105717.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79105717 = 23 ⋅3439379.

It is a cyclic number.

It is not a de Polignac number, because 71750197 - 2⁷ = 71750069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71750191) 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, 73179 + ... + 74152.

It is an arithmetic number, because the mean of its divisors is an integer number (17974504).

Almost surely, 2^71750197 is an apocalyptic number.

It is an amenable number.

71750197 is a deficient number, since it is larger than the sum of its proper divisors (147819).

71750197 is a wasteful number, since it uses less digits than its factorization.

71750197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147818.

The product of its (nonzero) digits is 15435, while the sum is 37.

The square root of 71750197 is about 8470.5488015830. The cubic root of 71750197 is about 415.5350856584.

The spelling of 71750197 in words is "seventy-one million, seven hundred fifty thousand, one hundred ninety-seven".