76655009 has 8 divisors (see below), whose sum is σ = 78963240. Its totient is φ = 74359296.

The previous prime is 76655003. The next prime is 76655053. The reversal of 76655009 is 90055667.

It can be written as a sum of positive squares in 4 ways, for example, as 8427409 + 68227600 = 2903^2 + 8260^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76655009 - 2⁴ = 76654993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76655003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10127 + ... + 15995.

It is an arithmetic number, because the mean of its divisors is an integer number (9870405).

Almost surely, 2^76655009 is an apocalyptic number.

It is an amenable number.

76655009 is a deficient number, since it is larger than the sum of its proper divisors (2308231).

76655009 is a wasteful number, since it uses less digits than its factorization.

76655009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6259.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 76655009 is about 8755.2846327233. The cubic root of 76655009 is about 424.7957662310.

The spelling of 76655009 in words is "seventy-six million, six hundred fifty-five thousand, nine".