730819 has 2 divisors, whose sum is σ = 730820. Its totient is φ = 730818.

The previous prime is 730811. The next prime is 730823. The reversal of 730819 is 918037.

730819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 730819 - 2³ = 730811 is a prime.

It is a super-2 number, since 2×730819² = 1068192821522, which contains 22 as substring.

It is equal to p₅₈₈₄₃ and since 730819 and 58843 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (730811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365409 + 365410.

It is an arithmetic number, because the mean of its divisors is an integer number (365410).

2⁷³⁰⁸¹⁹ is an apocalyptic number.

730819 is a deficient number, since it is larger than the sum of its proper divisors (1).

730819 is an equidigital number, since it uses as much as digits as its factorization.

730819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 730819 is about 854.8795236757. The cubic root of 730819 is about 90.0747937931.

The spelling of 730819 in words is "seven hundred thirty thousand, eight hundred nineteen".