76730173 has 4 divisors (see below), whose sum is σ = 82632508. Its totient is φ = 70827840.

The previous prime is 76730161. The next prime is 76730183. The reversal of 76730173 is 37103767.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26646244 + 50083929 = 5162^2 + 7077^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76730173 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 (76730123) 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, 2951148 + ... + 2951173.

It is an arithmetic number, because the mean of its divisors is an integer number (20658127).

Almost surely, 2^76730173 is an apocalyptic number.

It is an amenable number.

76730173 is a deficient number, since it is larger than the sum of its proper divisors (5902335).

76730173 is a wasteful number, since it uses less digits than its factorization.

76730173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5902334.

The product of its (nonzero) digits is 18522, while the sum is 34.

The square root of 76730173 is about 8759.5760742173. The cubic root of 76730173 is about 424.9345652431.

The spelling of 76730173 in words is "seventy-six million, seven hundred thirty thousand, one hundred seventy-three".