76660047 has 16 divisors (see below), whose sum is σ = 113712480. Its totient is φ = 51042816.

The previous prime is 76660039. The next prime is 76660063. The reversal of 76660047 is 74006667.

It is not a de Polignac number, because 76660047 - 2³ = 76660039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76659993 and 76660020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76660007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31693 + ... + 34025.

It is an arithmetic number, because the mean of its divisors is an integer number (7107030).

Almost surely, 2^76660047 is an apocalyptic number.

76660047 is a deficient number, since it is larger than the sum of its proper divisors (37052433).

76660047 is a wasteful number, since it uses less digits than its factorization.

76660047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559 (or 3553 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 76660047 is about 8755.5723399444. The cubic root of 76660047 is about 424.8050723165.

The spelling of 76660047 in words is "seventy-six million, six hundred sixty thousand, forty-seven".