780733 has 2 divisors, whose sum is σ = 780734. Its totient is φ = 780732.

The previous prime is 780721. The next prime is 780799. The reversal of 780733 is 337087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 777924 + 2809 = 882^2 + 53^2 .

It is a cyclic number.

It is not a de Polignac number, because 780733 - 2¹⁷ = 649661 is a prime.

780733 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (780233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390366 + 390367.

It is an arithmetic number, because the mean of its divisors is an integer number (390367).

2⁷⁸⁰⁷³³ is an apocalyptic number.

It is an amenable number.

780733 is a deficient number, since it is larger than the sum of its proper divisors (1).

780733 is an equidigital number, since it uses as much as digits as its factorization.

780733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 780733 is about 883.5909687180. The cubic root of 780733 is about 92.0804667772.

The spelling of 780733 in words is "seven hundred eighty thousand, seven hundred thirty-three".