780573 has 4 divisors (see below), whose sum is σ = 1040768. Its totient is φ = 520380.

The previous prime is 780553. The next prime is 780583. The reversal of 780573 is 375087.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 375087 = 3 ⋅125029.

It is not a de Polignac number, because 780573 - 2⁹ = 780061 is a prime.

It is a D-number.

It is the 884-th Hogben number.

It is a Duffinian number.

780573 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 780573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780523) by changing a digit.

It is a nontrivial repunit in base 883.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130093 + ... + 130098.

It is an arithmetic number, because the mean of its divisors is an integer number (260192).

2⁷⁸⁰⁵⁷³ is an apocalyptic number.

It is an amenable number.

780573 is a deficient number, since it is larger than the sum of its proper divisors (260195).

780573 is a wasteful number, since it uses less digits than its factorization.

780573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260194.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 780573 is about 883.5004244481. The cubic root of 780573 is about 92.0741761583.

The spelling of 780573 in words is "seven hundred eighty thousand, five hundred seventy-three".