16878863 has 2 divisors, whose sum is σ = 16878864. Its totient is φ = 16878862.

The previous prime is 16878847. The next prime is 16878881. The reversal of 16878863 is 36887861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16878863 - 2⁴ = 16878847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16875863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8439431 + 8439432.

It is an arithmetic number, because the mean of its divisors is an integer number (8439432).

Almost surely, 2^16878863 is an apocalyptic number.

16878863 is a deficient number, since it is larger than the sum of its proper divisors (1).

16878863 is an equidigital number, since it uses as much as digits as its factorization.

16878863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 47.

The square root of 16878863 is about 4108.3893437696. The cubic root of 16878863 is about 256.5159627662.

The spelling of 16878863 in words is "sixteen million, eight hundred seventy-eight thousand, eight hundred sixty-three".