68780335 has 16 divisors (see below), whose sum is σ = 89066880. Its totient is φ = 50688000.

The previous prime is 68780333. The next prime is 68780377. The reversal of 68780335 is 53308786.

It is not a de Polignac number, because 68780335 - 2¹ = 68780333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68780333) 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 15 ways as a sum of consecutive naturals, for example, 48111 + ... + 49519.

It is an arithmetic number, because the mean of its divisors is an integer number (5566680).

Almost surely, 2^68780335 is an apocalyptic number.

68780335 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68780335 is a deficient number, since it is larger than the sum of its proper divisors (20286545).

68780335 is a wasteful number, since it uses less digits than its factorization.

68780335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 68780335 is about 8293.3910434755. The cubic root of 68780335 is about 409.7208788303.

The spelling of 68780335 in words is "sixty-eight million, seven hundred eighty thousand, three hundred thirty-five".