68734920 has 32 divisors (see below), whose sum is σ = 206205120. Its totient is φ = 18329280.

The previous prime is 68734909. The next prime is 68734921. The reversal of 68734920 is 2943786.

It is not an unprimeable number, because it can be changed into a prime (68734921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286276 + ... + 286515.

It is an arithmetic number, because the mean of its divisors is an integer number (6443910).

Almost surely, 2^68734920 is an apocalyptic number.

68734920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68734920 is an abundant number, since it is smaller than the sum of its proper divisors (137470200).

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

68734920 is a wasteful number, since it uses less digits than its factorization.

68734920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572805 (or 572801 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 68734920 is about 8290.6525678019. The cubic root of 68734920 is about 409.6306807107.

The spelling of 68734920 in words is "sixty-eight million, seven hundred thirty-four thousand, nine hundred twenty".