816043 has 2 divisors, whose sum is σ = 816044. Its totient is φ = 816042.

The previous prime is 816037. The next prime is 816047. The reversal of 816043 is 340618.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-816043 is a prime.

It is an Ulam number.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (816047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408021 + 408022.

It is an arithmetic number, because the mean of its divisors is an integer number (408022).

2⁸¹⁶⁰⁴³ is an apocalyptic number.

816043 is a deficient number, since it is larger than the sum of its proper divisors (1).

816043 is an equidigital number, since it uses as much as digits as its factorization.

816043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 816043 is about 903.3509838374. The cubic root of 816043 is about 93.4482159609.

The spelling of 816043 in words is "eight hundred sixteen thousand, forty-three".