719820 has 96 divisors (see below), whose sum is σ = 2365440. Its totient is φ = 181440.

The previous prime is 719813. The next prime is 719821. The reversal of 719820 is 28917.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (719821) 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 31 ways as a sum of consecutive naturals, for example, 16719 + ... + 16761.

It is an arithmetic number, because the mean of its divisors is an integer number (24640).

2⁷¹⁹⁸²⁰ 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 719820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1182720).

719820 is an abundant number, since it is smaller than the sum of its proper divisors (1645620).

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

719820 is a wasteful number, since it uses less digits than its factorization.

719820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 719820 is about 848.4220647767. The cubic root of 719820 is about 89.6206253007.

The spelling of 719820 in words is "seven hundred nineteen thousand, eight hundred twenty".