16700257 has 4 divisors (see below), whose sum is σ = 19086016. Its totient is φ = 14314500.

The previous prime is 16700251. The next prime is 16700261. The reversal of 16700257 is 75200761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16700257 - 2²³ = 8311649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16700251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1192869 + ... + 1192882.

It is an arithmetic number, because the mean of its divisors is an integer number (4771504).

Almost surely, 2^16700257 is an apocalyptic number.

It is an amenable number.

16700257 is a deficient number, since it is larger than the sum of its proper divisors (2385759).

16700257 is an equidigital number, since it uses as much as digits as its factorization.

16700257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385758.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 16700257 is about 4086.5947927339. The cubic root of 16700257 is about 255.6079662372.

The spelling of 16700257 in words is "sixteen million, seven hundred thousand, two hundred fifty-seven".