723698790 has 128 divisors (see below), whose sum is σ = 1894233600. Its totient is φ = 176348160.

The previous prime is 723698777. The next prime is 723698791. The reversal of 723698790 is 97896327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723698791) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 4042921 + ... + 4043099.

It is an arithmetic number, because the mean of its divisors is an integer number (14798700).

Almost surely, 2^723698790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 723698790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (947116800).

723698790 is an abundant number, since it is smaller than the sum of its proper divisors (1170534810).

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

723698790 is a wasteful number, since it uses less digits than its factorization.

723698790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422.

The product of its (nonzero) digits is 1143072, while the sum is 51.

The square root of 723698790 is about 26901.6503211234. The cubic root of 723698790 is about 897.8131225885.

The spelling of 723698790 in words is "seven hundred twenty-three million, six hundred ninety-eight thousand, seven hundred ninety".