16363997 has 16 divisors (see below), whose sum is σ = 18768960. Its totient is φ = 14141952.

The previous prime is 16363993. The next prime is 16363999. The reversal of 16363997 is 79936361.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16363997 - 2² = 16363993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16363993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23618 + ... + 24300.

It is an arithmetic number, because the mean of its divisors is an integer number (1173060).

Almost surely, 2^16363997 is an apocalyptic number.

It is an amenable number.

16363997 is a deficient number, since it is larger than the sum of its proper divisors (2404963).

16363997 is a wasteful number, since it uses less digits than its factorization.

16363997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812.

The product of its digits is 183708, while the sum is 44.

The square root of 16363997 is about 4045.2437503814. The cubic root of 16363997 is about 253.8807642974.

The spelling of 16363997 in words is "sixteen million, three hundred sixty-three thousand, nine hundred ninety-seven".