719973 has 6 divisors (see below), whose sum is σ = 1039974. Its totient is φ = 479976.

The previous prime is 719959. The next prime is 719981. The reversal of 719973 is 379917.

It can be written as a sum of positive squares in only one way, i.e., 471969 + 248004 = 687^2 + 498^2 .

It is not a de Polignac number, because 719973 - 2⁵ = 719941 is a prime.

It is a super-2 number, since 2×719973² = 1036722241458, which contains 22 as substring.

It is a Curzon number.

719973 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (719903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39990 + ... + 40007.

It is an arithmetic number, because the mean of its divisors is an integer number (173329).

2⁷¹⁹⁹⁷³ is an apocalyptic number.

It is an amenable number.

719973 is a deficient number, since it is larger than the sum of its proper divisors (320001).

719973 is a wasteful number, since it uses less digits than its factorization.

719973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80003 (or 80000 counting only the distinct ones).

The product of its digits is 11907, while the sum is 36.

The square root of 719973 is about 848.5122273721. The cubic root of 719973 is about 89.6269745660.

The spelling of 719973 in words is "seven hundred nineteen thousand, nine hundred seventy-three".