68921484 has 12 divisors (see below), whose sum is σ = 160816824. Its totient is φ = 22973824.

The previous prime is 68921483. The next prime is 68921543. The reversal of 68921484 is 48412986.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68921483) 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 3 ways as a sum of consecutive naturals, for example, 2871717 + ... + 2871740.

It is an arithmetic number, because the mean of its divisors is an integer number (13401402).

Almost surely, 2^68921484 is an apocalyptic number.

It is an amenable number.

68921484 is an abundant number, since it is smaller than the sum of its proper divisors (91895340).

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

68921484 is a wasteful number, since it uses less digits than its factorization.

68921484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5743464 (or 5743462 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 68921484 is about 8301.8964098572. The cubic root of 68921484 is about 410.0009597439. Note that the first 3 decimals are identical.

The spelling of 68921484 in words is "sixty-eight million, nine hundred twenty-one thousand, four hundred eighty-four".