780453 has 12 divisors (see below), whose sum is σ = 1193868. Its totient is φ = 489600.

The previous prime is 780433. The next prime is 780457. The reversal of 780453 is 354087.

It can be written as a sum of positive squares in 2 ways, for example, as 213444 + 567009 = 462^2 + 753^2 .

It is not a de Polignac number, because 780453 - 2⁵ = 780421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2398 + ... + 2703.

It is an arithmetic number, because the mean of its divisors is an integer number (99489).

2⁷⁸⁰⁴⁵³ is an apocalyptic number.

It is an amenable number.

780453 is a deficient number, since it is larger than the sum of its proper divisors (413415).

780453 is a wasteful number, since it uses less digits than its factorization.

780453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5124 (or 5121 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 780453 is about 883.4325101557. The cubic root of 780453 is about 92.0694576300.

The spelling of 780453 in words is "seven hundred eighty thousand, four hundred fifty-three".