68380740 has 48 divisors (see below), whose sum is σ = 212741760. Its totient is φ = 18234720.

The previous prime is 68380727. The next prime is 68380751. The reversal of 68380740 is 4708386.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 68380695 and 68380704.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62776 + ... + 63855.

It is an arithmetic number, because the mean of its divisors is an integer number (4432120).

Almost surely, 2^68380740 is an apocalyptic number.

68380740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68380740 is an abundant number, since it is smaller than the sum of its proper divisors (144361020).

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

68380740 is a wasteful number, since it uses less digits than its factorization.

68380740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126649 (or 126641 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 68380740 is about 8269.2647798943. The cubic root of 68380740 is about 408.9258817197.

The spelling of 68380740 in words is "sixty-eight million, three hundred eighty thousand, seven hundred forty".