73812197 has 4 divisors (see below), whose sum is σ = 74343360. Its totient is φ = 73281036.

The previous prime is 73812191. The next prime is 73812203. The reversal of 73812197 is 79121837.

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: 79121837 = 5581 ⋅14177.

It is an interprime number because it is at equal distance from previous prime (73812191) and next prime (73812203).

It is a cyclic number.

It is not a de Polignac number, because 73812197 - 2⁶ = 73812133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73812197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73812191) 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, 265373 + ... + 265650.

It is an arithmetic number, because the mean of its divisors is an integer number (18585840).

Almost surely, 2^73812197 is an apocalyptic number.

It is an amenable number.

73812197 is a deficient number, since it is larger than the sum of its proper divisors (531163).

73812197 is a wasteful number, since it uses less digits than its factorization.

73812197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531162.

The product of its digits is 21168, while the sum is 38.

The square root of 73812197 is about 8591.4025048300. The cubic root of 73812197 is about 419.4781822599.

The spelling of 73812197 in words is "seventy-three million, eight hundred twelve thousand, one hundred ninety-seven".