16506487 has 2 divisors, whose sum is σ = 16506488. Its totient is φ = 16506486.

The previous prime is 16506467. The next prime is 16506499. The reversal of 16506487 is 78460561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16506487 - 2⁷ = 16506359 is a prime.

It is a super-2 number, since 2×16506487² = 544928226162338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16506407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8253243 + 8253244.

It is an arithmetic number, because the mean of its divisors is an integer number (8253244).

Almost surely, 2^16506487 is an apocalyptic number.

16506487 is a deficient number, since it is larger than the sum of its proper divisors (1).

16506487 is an equidigital number, since it uses as much as digits as its factorization.

16506487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 16506487 is about 4062.8176183531. The cubic root of 16506487 is about 254.6155272334.

The spelling of 16506487 in words is "sixteen million, five hundred six thousand, four hundred eighty-seven".