784081 has 2 divisors, whose sum is σ = 784082. Its totient is φ = 784080.

The previous prime is 784061. The next prime is 784087. The reversal of 784081 is 180487.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 654481 + 129600 = 809^2 + 360^2 .

It is a cyclic number.

It is not a de Polignac number, because 784081 - 2⁷ = 783953 is a prime.

It is a super-2 number, since 2×784081² = 1229566029122, which contains 22 as substring.

It is equal to p₆₂₇₆₇ and since 784081 and 62767 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 (784087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392040 + 392041.

It is an arithmetic number, because the mean of its divisors is an integer number (392041).

2⁷⁸⁴⁰⁸¹ is an apocalyptic number.

It is an amenable number.

784081 is a deficient number, since it is larger than the sum of its proper divisors (1).

784081 is an equidigital number, since it uses as much as digits as its factorization.

784081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 784081 is about 885.4834837534. The cubic root of 784081 is about 92.2119012874.

It can be divided in two parts, 7840 and 81, that added together give a square (7921 = 89²).

The spelling of 784081 in words is "seven hundred eighty-four thousand, eighty-one".