68689380 has 24 divisors (see below), whose sum is σ = 192330432. Its totient is φ = 18317152.

The previous prime is 68689363. The next prime is 68689403. The reversal of 68689380 is 8398686.

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 7 ways as a sum of consecutive naturals, for example, 572352 + ... + 572471.

It is an arithmetic number, because the mean of its divisors is an integer number (8013768).

Almost surely, 2^68689380 is an apocalyptic number.

68689380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68689380 is an abundant number, since it is smaller than the sum of its proper divisors (123641052).

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

68689380 is a wasteful number, since it uses less digits than its factorization.

68689380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144835 (or 1144833 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 68689380 is about 8287.9056461811. The cubic root of 68689380 is about 409.5401944263.

The spelling of 68689380 in words is "sixty-eight million, six hundred eighty-nine thousand, three hundred eighty".