16247897 has 2 divisors, whose sum is σ = 16247898. Its totient is φ = 16247896.

The previous prime is 16247893. The next prime is 16247909. The reversal of 16247897 is 79874261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10916416 + 5331481 = 3304^2 + 2309^2 .

It is a cyclic number.

It is not a de Polignac number, because 16247897 - 2² = 16247893 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16247893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8123948 + 8123949.

It is an arithmetic number, because the mean of its divisors is an integer number (8123949).

Almost surely, 2^16247897 is an apocalyptic number.

It is an amenable number.

16247897 is a deficient number, since it is larger than the sum of its proper divisors (1).

16247897 is an equidigital number, since it uses as much as digits as its factorization.

16247897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 16247897 is about 4030.8680206625. The cubic root of 16247897 is about 253.2789239492.

The spelling of 16247897 in words is "sixteen million, two hundred forty-seven thousand, eight hundred ninety-seven".