308680085 has 16 divisors (see below), whose sum is σ = 434775936. Its totient is φ = 205944768.

The previous prime is 308680081. The next prime is 308680091. The reversal of 308680085 is 580086803.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 308680085 - 2² = 308680081 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308680081) 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, 117887 + ... + 120476.

It is an arithmetic number, because the mean of its divisors is an integer number (27173496).

Almost surely, 2^308680085 is an apocalyptic number.

308680085 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

308680085 is a deficient number, since it is larger than the sum of its proper divisors (126095851).

308680085 is a wasteful number, since it uses less digits than its factorization.

308680085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238412.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 308680085 is about 17569.2938105093. The cubic root of 308680085 is about 675.8280354865.

The spelling of 308680085 in words is "three hundred eight million, six hundred eighty thousand, eighty-five".