16397711 has 4 divisors (see below), whose sum is σ = 17888424. Its totient is φ = 14907000.

The previous prime is 16397699. The next prime is 16397713. The reversal of 16397711 is 11779361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11779361 = 11 ⋅1070851.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16397711 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 (16397713) 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, 745340 + ... + 745361.

It is an arithmetic number, because the mean of its divisors is an integer number (4472106).

Almost surely, 2^16397711 is an apocalyptic number.

16397711 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16397711 is the 2165-th centered heptagonal number.

16397711 is a deficient number, since it is larger than the sum of its proper divisors (1490713).

16397711 is a wasteful number, since it uses less digits than its factorization.

16397711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490712.

The product of its digits is 7938, while the sum is 35.

The square root of 16397711 is about 4049.4087222705. The cubic root of 16397711 is about 254.0549977007.

The spelling of 16397711 in words is "sixteen million, three hundred ninety-seven thousand, seven hundred eleven".