68309955 has 48 divisors (see below), whose sum is σ = 138999744. Its totient is φ = 30378240.

The previous prime is 68309939. The next prime is 68309971. The reversal of 68309955 is 55990386.

It is an interprime number because it is at equal distance from previous prime (68309939) and next prime (68309971).

It is not a de Polignac number, because 68309955 - 2⁴ = 68309939 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68309955.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 8725 + ... + 14585.

It is an arithmetic number, because the mean of its divisors is an integer number (2895828).

Almost surely, 2^68309955 is an apocalyptic number.

68309955 is an abundant number, since it is smaller than the sum of its proper divisors (70689789).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68309955 is a wasteful number, since it uses less digits than its factorization.

68309955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916 (or 5913 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 68309955 is about 8264.9836660456. The cubic root of 68309955 is about 408.7847317793.

The spelling of 68309955 in words is "sixty-eight million, three hundred nine thousand, nine hundred fifty-five".