68785740 has 192 divisors, whose sum is σ = 232243200. Its totient is φ = 16837632.

The previous prime is 68785733. The next prime is 68785763. The reversal of 68785740 is 4758786.

68785740 is a `hidden beast` number, since 6 + 8 + 78 + 574 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 541557 + ... + 541683.

It is an arithmetic number, because the mean of its divisors is an integer number (1209600).

Almost surely, 2^68785740 is an apocalyptic number.

68785740 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 68785740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116121600).

68785740 is an abundant number, since it is smaller than the sum of its proper divisors (163457460).

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

68785740 is a wasteful number, since it uses less digits than its factorization.

68785740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 68785740 is about 8293.7168989543. The cubic root of 68785740 is about 409.7316109839.

The spelling of 68785740 in words is "sixty-eight million, seven hundred eighty-five thousand, seven hundred forty".