76660305 has 16 divisors (see below), whose sum is σ = 122805504. Its totient is φ = 40835840.

The previous prime is 76660301. The next prime is 76660343. The reversal of 76660305 is 50306667.

It is not a de Polignac number, because 76660305 - 2² = 76660301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76660301) 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 in 15 ways as a sum of consecutive naturals, for example, 12040 + ... + 17270.

It is an arithmetic number, because the mean of its divisors is an integer number (7675344).

Almost surely, 2^76660305 is an apocalyptic number.

It is an amenable number.

76660305 is a deficient number, since it is larger than the sum of its proper divisors (46145199).

76660305 is a wasteful number, since it uses less digits than its factorization.

76660305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6216.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 76660305 is about 8755.5870734063. The cubic root of 76660305 is about 424.8055488776.

The spelling of 76660305 in words is "seventy-six million, six hundred sixty thousand, three hundred five".