720796734 has 96 divisors (see below), whose sum is σ = 1821980160. Its totient is φ = 201704256.

The previous prime is 720796733. The next prime is 720796751. The reversal of 720796734 is 437697027.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 720796734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720796733) 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 47 ways as a sum of consecutive naturals, for example, 1641687 + ... + 1642125.

It is an arithmetic number, because the mean of its divisors is an integer number (18978960).

Almost surely, 2^720796734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720796734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (910990080).

720796734 is an abundant number, since it is smaller than the sum of its proper divisors (1101183426).

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

720796734 is a wasteful number, since it uses less digits than its factorization.

720796734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 45.

The square root of 720796734 is about 26847.6578866761. The cubic root of 720796734 is about 896.6114281387.

The spelling of 720796734 in words is "seven hundred twenty million, seven hundred ninety-six thousand, seven hundred thirty-four".