16863901 has 2 divisors, whose sum is σ = 16863902. Its totient is φ = 16863900.

The previous prime is 16863863. The next prime is 16863941. The reversal of 16863901 is 10936861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15792676 + 1071225 = 3974^2 + 1035^2 .

It is a cyclic number.

It is not a de Polignac number, because 16863901 - 2¹⁷ = 16732829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16863941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8431950 + 8431951.

It is an arithmetic number, because the mean of its divisors is an integer number (8431951).

Almost surely, 2^16863901 is an apocalyptic number.

It is an amenable number.

16863901 is a deficient number, since it is larger than the sum of its proper divisors (1).

16863901 is an equidigital number, since it uses as much as digits as its factorization.

16863901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 16863901 is about 4106.5680318241. The cubic root of 16863901 is about 256.4401455259.

The spelling of 16863901 in words is "sixteen million, eight hundred sixty-three thousand, nine hundred one".