723395680 has 48 divisors (see below), whose sum is σ = 1953171360. Its totient is φ = 248020992.

The previous prime is 723395671. The next prime is 723395689. The reversal of 723395680 is 86593327.

It is an interprime number because it is at equal distance from previous prime (723395671) and next prime (723395689).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723395689) 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, 321825 + ... + 324064.

It is an arithmetic number, because the mean of its divisors is an integer number (40691070).

Almost surely, 2^723395680 is an apocalyptic number.

723395680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

723395680 is an abundant number, since it is smaller than the sum of its proper divisors (1229775680).

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

723395680 is a wasteful number, since it uses less digits than its factorization.

723395680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645911 (or 645903 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 723395680 is about 26896.0160618631. The cubic root of 723395680 is about 897.6877600567.

The spelling of 723395680 in words is "seven hundred twenty-three million, three hundred ninety-five thousand, six hundred eighty".