73147966 has 4 divisors (see below), whose sum is σ = 109721952. Its totient is φ = 36573982.

The previous prime is 73147961. The next prime is 73147973. The reversal of 73147966 is 66974137.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73147961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18286990 + ... + 18286993.

It is an arithmetic number, because the mean of its divisors is an integer number (27430488).

Almost surely, 2^73147966 is an apocalyptic number.

73147966 is a deficient number, since it is larger than the sum of its proper divisors (36573986).

73147966 is a wasteful number, since it uses less digits than its factorization.

73147966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36573985.

The product of its digits is 190512, while the sum is 43.

The square root of 73147966 is about 8552.6584171239. The cubic root of 73147966 is about 418.2161035446.

The spelling of 73147966 in words is "seventy-three million, one hundred forty-seven thousand, nine hundred sixty-six".