740392721068 has 216 divisors, whose sum is σ = 1889107085376. Its totient is φ = 250610088960.

The previous prime is 740392721063. The next prime is 740392721113. The reversal of 740392721068 is 860127293047.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (740392721063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5170605 + ... + 5311867.

It is an arithmetic number, because the mean of its divisors is an integer number (8745866136).

Almost surely, 2^740392721068 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 740392721068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (944553542688).

740392721068 is an abundant number, since it is smaller than the sum of its proper divisors (1148714364308).

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

740392721068 is a wasteful number, since it uses less digits than its factorization.

740392721068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141333 (or 141313 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 740392721068 in words is "seven hundred forty billion, three hundred ninety-two million, seven hundred twenty-one thousand, sixty-eight".