68773740 has 96 divisors (see below), whose sum is σ = 221168640. Its totient is φ = 15641856.

The previous prime is 68773739. The next prime is 68773751. The reversal of 68773740 is 4737786.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 68773692 and 68773701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156441 + ... + 156879.

It is an arithmetic number, because the mean of its divisors is an integer number (2303840).

Almost surely, 2^68773740 is an apocalyptic number.

68773740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68773740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110584320).

68773740 is an abundant number, since it is smaller than the sum of its proper divisors (152394900).

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

68773740 is a wasteful number, since it uses less digits than its factorization.

68773740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 68773740 is about 8292.9934281898. The cubic root of 68773740 is about 409.7077830544.

The spelling of 68773740 in words is "sixty-eight million, seven hundred seventy-three thousand, seven hundred forty".