73666193 has 4 divisors (see below), whose sum is σ = 73747968. Its totient is φ = 73584420.

The previous prime is 73666163. The next prime is 73666207. The reversal of 73666193 is 39166637.

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 73666193 - 2⁸ = 73665937 is a prime.

It is a super-2 number, since 2×73666193² = 10853415982226498, which contains 22 as substring.

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 73666193.

It is not an unprimeable number, because it can be changed into a prime (73666123) 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, 39521 + ... + 41342.

It is an arithmetic number, because the mean of its divisors is an integer number (18436992).

Almost surely, 2^73666193 is an apocalyptic number.

It is an amenable number.

73666193 is a deficient number, since it is larger than the sum of its proper divisors (81775).

73666193 is an equidigital number, since it uses as much as digits as its factorization.

73666193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81774.

The product of its digits is 122472, while the sum is 41.

The square root of 73666193 is about 8582.9011994779. The cubic root of 73666193 is about 419.2014171651.

The spelling of 73666193 in words is "seventy-three million, six hundred sixty-six thousand, one hundred ninety-three".