16946257 has 4 divisors (see below), whose sum is σ = 17340400. Its totient is φ = 16552116.

The previous prime is 16946249. The next prime is 16946269. The reversal of 16946257 is 75264961.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75264961 = 293 ⋅256877.

It is a cyclic number.

It is not a de Polignac number, because 16946257 - 2³ = 16946249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16946287) 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, 197007 + ... + 197092.

It is an arithmetic number, because the mean of its divisors is an integer number (4335100).

Almost surely, 2^16946257 is an apocalyptic number.

It is an amenable number.

16946257 is a deficient number, since it is larger than the sum of its proper divisors (394143).

16946257 is an equidigital number, since it uses as much as digits as its factorization.

16946257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394142.

The product of its digits is 90720, while the sum is 40.

The square root of 16946257 is about 4116.5831705433. The cubic root of 16946257 is about 256.8569154118.

The spelling of 16946257 in words is "sixteen million, nine hundred forty-six thousand, two hundred fifty-seven".