16687051 has 2 divisors, whose sum is σ = 16687052. Its totient is φ = 16687050.

The previous prime is 16687043. The next prime is 16687079. The reversal of 16687051 is 15078661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16687051 - 2³ = 16687043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16686998 and 16687016.

It is not a weakly prime, because it can be changed into another prime (16687031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8343525 + 8343526.

It is an arithmetic number, because the mean of its divisors is an integer number (8343526).

Almost surely, 2^16687051 is an apocalyptic number.

16687051 is a deficient number, since it is larger than the sum of its proper divisors (1).

16687051 is an equidigital number, since it uses as much as digits as its factorization.

16687051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 16687051 is about 4084.9787025149. The cubic root of 16687051 is about 255.5405730837.

The spelling of 16687051 in words is "sixteen million, six hundred eighty-seven thousand, fifty-one".