16316761 has 4 divisors (see below), whose sum is σ = 16327332. Its totient is φ = 16306192.

The previous prime is 16316759. The next prime is 16316771. The reversal of 16316761 is 16761361.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4756761 + 11560000 = 2181^2 + 3400^2 .

It is a cyclic number.

It is not a de Polignac number, because 16316761 - 2¹ = 16316759 is a prime.

It is a super-2 number, since 2×16316761² = 532473379062242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16316731) 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, 2470 + ... + 6223.

It is an arithmetic number, because the mean of its divisors is an integer number (4081833).

Almost surely, 2^16316761 is an apocalyptic number.

It is an amenable number.

16316761 is a deficient number, since it is larger than the sum of its proper divisors (10571).

16316761 is an equidigital number, since it uses as much as digits as its factorization.

16316761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10570.

The product of its digits is 4536, while the sum is 31.

The square root of 16316761 is about 4039.4010694656. The cubic root of 16316761 is about 253.6362464238.

The spelling of 16316761 in words is "sixteen million, three hundred sixteen thousand, seven hundred sixty-one".