68020740 has 72 divisors (see below), whose sum is σ = 218476440. Its totient is φ = 17071104.

The previous prime is 68020739. The next prime is 68020753. The reversal of 68020740 is 4702086.

It can be written as a sum of positive squares in 4 ways, for example, as 8020224 + 60000516 = 2832^2 + 7746^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8055 + ... + 14174.

It is an arithmetic number, because the mean of its divisors is an integer number (3034395).

Almost surely, 2^68020740 is an apocalyptic number.

68020740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68020740 is an abundant number, since it is smaller than the sum of its proper divisors (150455700).

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

68020740 is a wasteful number, since it uses less digits than its factorization.

68020740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22261 (or 22256 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 68020740 is about 8247.4687025778. The cubic root of 68020740 is about 408.2070028005.

The spelling of 68020740 in words is "sixty-eight million, twenty thousand, seven hundred forty".