16865397 has 12 divisors (see below), whose sum is σ = 24397984. Its totient is φ = 11226600.

The previous prime is 16865393. The next prime is 16865413. The reversal of 16865397 is 79356861.

It is a happy number.

It is not a de Polignac number, because 16865397 - 2² = 16865393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16865393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8568 + ... + 10350.

Almost surely, 2^16865397 is an apocalyptic number.

It is an amenable number.

16865397 is a deficient number, since it is larger than the sum of its proper divisors (7532587).

16865397 is a wasteful number, since it uses less digits than its factorization.

16865397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840 (or 2837 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 16865397 is about 4106.7501750167. The cubic root of 16865397 is about 256.4477282538.

The spelling of 16865397 in words is "sixteen million, eight hundred sixty-five thousand, three hundred ninety-seven".