816463073 has 2 divisors, whose sum is σ = 816463074. Its totient is φ = 816463072.

The previous prime is 816463051. The next prime is 816463103. The reversal of 816463073 is 370364618.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 788879569 + 27583504 = 28087^2 + 5252^2 .

It is a cyclic number.

It is not a de Polignac number, because 816463073 - 2⁸ = 816462817 is a prime.

It is a super-2 number, since 2×816463073² = 1333223899145206658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (816463673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408231536 + 408231537.

It is an arithmetic number, because the mean of its divisors is an integer number (408231537).

Almost surely, 2^816463073 is an apocalyptic number.

It is an amenable number.

816463073 is a deficient number, since it is larger than the sum of its proper divisors (1).

816463073 is an equidigital number, since it uses as much as digits as its factorization.

816463073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 816463073 is about 28573.8179633034. The cubic root of 816463073 is about 934.6424793418.

The spelling of 816463073 in words is "eight hundred sixteen million, four hundred sixty-three thousand, seventy-three".