723971712 has 64 divisors (see below), whose sum is σ = 1931276160. Its totient is φ = 240291840.

The previous prime is 723971683. The next prime is 723971719. The reversal of 723971712 is 217179327.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (723971719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88633 + ... + 96455.

It is an arithmetic number, because the mean of its divisors is an integer number (30176190).

Almost surely, 2^723971712 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 723971712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (965638080).

723971712 is an abundant number, since it is smaller than the sum of its proper divisors (1207304448).

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

723971712 is a wasteful number, since it uses less digits than its factorization.

723971712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8081 (or 8069 counting only the distinct ones).

The product of its digits is 37044, while the sum is 39.

The square root of 723971712 is about 26906.7224313925. The cubic root of 723971712 is about 897.9259697935.

The spelling of 723971712 in words is "seven hundred twenty-three million, nine hundred seventy-one thousand, seven hundred twelve".