12901663 has 2 divisors, whose sum is σ = 12901664. Its totient is φ = 12901662.

The previous prime is 12901633. The next prime is 12901699. The reversal of 12901663 is 36610921.

12901663 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12901663 - 2¹³ = 12893471 is a prime.

It is equal to p₈₄₃₂₉₂ and since 12901663 and 843292 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12901633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6450831 + 6450832.

It is an arithmetic number, because the mean of its divisors is an integer number (6450832).

Almost surely, 2^12901663 is an apocalyptic number.

12901663 is a deficient number, since it is larger than the sum of its proper divisors (1).

12901663 is an equidigital number, since it uses as much as digits as its factorization.

12901663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 12901663 is about 3591.8885004966. Note that the first 3 decimals coincide. The cubic root of 12901663 is about 234.5390875359.

The spelling of 12901663 in words is "twelve million, nine hundred one thousand, six hundred sixty-three".