16432987 has 2 divisors, whose sum is σ = 16432988. Its totient is φ = 16432986.

The previous prime is 16432981. The next prime is 16432991. The reversal of 16432987 is 78923461.

It is a strong prime.

It is an emirp because it is prime and its reverse (78923461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16432987 - 2³ = 16432979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16432981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8216493 + 8216494.

It is an arithmetic number, because the mean of its divisors is an integer number (8216494).

Almost surely, 2^16432987 is an apocalyptic number.

16432987 is a deficient number, since it is larger than the sum of its proper divisors (1).

16432987 is an equidigital number, since it uses as much as digits as its factorization.

16432987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 16432987 is about 4053.7620798463. The cubic root of 16432987 is about 254.2370480117.

The spelling of 16432987 in words is "sixteen million, four hundred thirty-two thousand, nine hundred eighty-seven".