16277689 has 2 divisors, whose sum is σ = 16277690. Its totient is φ = 16277688.

The previous prime is 16277659. The next prime is 16277707. The reversal of 16277689 is 98677261.

It is a happy number.

16277689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10112400 + 6165289 = 3180^2 + 2483^2 .

It is a cyclic number.

It is not a de Polignac number, because 16277689 - 2⁷ = 16277561 is a prime.

It is not a weakly prime, because it can be changed into another prime (16277659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8138844 + 8138845.

It is an arithmetic number, because the mean of its divisors is an integer number (8138845).

Almost surely, 2^16277689 is an apocalyptic number.

It is an amenable number.

16277689 is a deficient number, since it is larger than the sum of its proper divisors (1).

16277689 is an equidigital number, since it uses as much as digits as its factorization.

16277689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 16277689 is about 4034.5618101598. The cubic root of 16277689 is about 253.4336327605.

It can be divided in two parts, 1627 and 7689, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 16277689 in words is "sixteen million, two hundred seventy-seven thousand, six hundred eighty-nine".