68746890 has 16 divisors (see below), whose sum is σ = 164992608. Its totient is φ = 18332496.

The previous prime is 68746889. The next prime is 68746897. The reversal of 68746890 is 9864786.

It is a super-2 number, since 2×68746890² = 9452269769344200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68746897) 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 7 ways as a sum of consecutive naturals, for example, 1145752 + ... + 1145811.

It is an arithmetic number, because the mean of its divisors is an integer number (10312038).

Almost surely, 2^68746890 is an apocalyptic number.

68746890 is an abundant number, since it is smaller than the sum of its proper divisors (96245718).

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

68746890 is a wasteful number, since it uses less digits than its factorization.

68746890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291573.

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 68746890 is about 8291.3744337112. The cubic root of 68746890 is about 409.6544580214.

The spelling of 68746890 in words is "sixty-eight million, seven hundred forty-six thousand, eight hundred ninety".