68443020 has 72 divisors (see below), whose sum is σ = 219832704. Its totient is φ = 17177088.

The previous prime is 68443019. The next prime is 68443021. The reversal of 68443020 is 2034486.

It is an interprime number because it is at equal distance from previous prime (68443019) and next prime (68443021).

It is not an unprimeable number, because it can be changed into a prime (68443021) 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 23 ways as a sum of consecutive naturals, for example, 8124 + ... + 14243.

It is an arithmetic number, because the mean of its divisors is an integer number (3053232).

Almost surely, 2^68443020 is an apocalyptic number.

68443020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68443020 is an abundant number, since it is smaller than the sum of its proper divisors (151389684).

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

68443020 is a wasteful number, since it uses less digits than its factorization.

68443020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22399 (or 22394 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 68443020 is about 8273.0296747927. The cubic root of 68443020 is about 409.0499915978.

The spelling of 68443020 in words is "sixty-eight million, four hundred forty-three thousand, twenty".