999878063 has 2 divisors, whose sum is σ = 999878064. Its totient is φ = 999878062.

The previous prime is 999878053. The next prime is 999878081. The reversal of 999878063 is 360878999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999878063 - 2¹² = 999873967 is a prime.

It is a super-2 number, since 2×999878063² = 1999512281737263938, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 999877993 and 999878011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999878053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499939031 + 499939032.

It is an arithmetic number, because the mean of its divisors is an integer number (499939032).

Almost surely, 2^999878063 is an apocalyptic number.

999878063 is a deficient number, since it is larger than the sum of its proper divisors (1).

999878063 is an equidigital number, since it uses as much as digits as its factorization.

999878063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The square root of 999878063 is about 31620.8485496515. The cubic root of 999878063 is about 999.9593526812.

The spelling of 999878063 in words is "nine hundred ninety-nine million, eight hundred seventy-eight thousand, sixty-three".