724620 has 48 divisors (see below), whose sum is σ = 2187360. Its totient is φ = 178176.

The previous prime is 724609. The next prime is 724621. The reversal of 724620 is 26427.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724621) by changing a digit.

724620 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316 + ... + 1244.

It is an arithmetic number, because the mean of its divisors is an integer number (45570).

2⁷²⁴⁶²⁰ 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 724620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1093680).

724620 is an abundant number, since it is smaller than the sum of its proper divisors (1462740).

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

724620 is a wasteful number, since it uses less digits than its factorization.

724620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 724620 is about 851.2461453657. The cubic root of 724620 is about 89.8193908883.

The spelling of 724620 in words is "seven hundred twenty-four thousand, six hundred twenty".