782981 has 2 divisors, whose sum is σ = 782982. Its totient is φ = 782980.

The previous prime is 782963. The next prime is 782983. The reversal of 782981 is 189287.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 410881 + 372100 = 641^2 + 610^2 .

It is a cyclic number.

It is not a de Polignac number, because 782981 - 2¹⁸ = 520837 is a prime.

It is a super-2 number, since 2×782981² = 1226118492722, which contains 22 as substring.

Together with 782983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (782983) 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 as a sum of consecutive naturals, namely, 391490 + 391491.

It is an arithmetic number, because the mean of its divisors is an integer number (391491).

2⁷⁸²⁹⁸¹ is an apocalyptic number.

It is an amenable number.

782981 is a deficient number, since it is larger than the sum of its proper divisors (1).

782981 is an equidigital number, since it uses as much as digits as its factorization.

782981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 35.

The square root of 782981 is about 884.8621361546. The cubic root of 782981 is about 92.1687592471.

The spelling of 782981 in words is "seven hundred eighty-two thousand, nine hundred eighty-one".