68820855 has 16 divisors (see below), whose sum is σ = 112675200. Its totient is φ = 35850528.

The previous prime is 68820833. The next prime is 68820877. The reversal of 68820855 is 55802886.

It is an interprime number because it is at equal distance from previous prime (68820833) and next prime (68820877).

It is not a de Polignac number, because 68820855 - 2⁹ = 68820343 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52705 + ... + 53994.

It is an arithmetic number, because the mean of its divisors is an integer number (7042200).

Almost surely, 2^68820855 is an apocalyptic number.

68820855 is a deficient number, since it is larger than the sum of its proper divisors (43854345).

68820855 is a wasteful number, since it uses less digits than its factorization.

68820855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106750.

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 68820855 is about 8295.8335928344. The cubic root of 68820855 is about 409.8013215465.

The spelling of 68820855 in words is "sixty-eight million, eight hundred twenty thousand, eight hundred fifty-five".