16065813 has 4 divisors (see below), whose sum is σ = 21421088. Its totient is φ = 10710540.

The previous prime is 16065743. The next prime is 16065817. The reversal of 16065813 is 31856061.

16065813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16065813 - 2⁸ = 16065557 is a prime.

It is a super-2 number, since 2×16065813² = 516220694701938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16065817) 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, 2677633 + ... + 2677638.

It is an arithmetic number, because the mean of its divisors is an integer number (5355272).

Almost surely, 2^16065813 is an apocalyptic number.

It is an amenable number.

16065813 is a deficient number, since it is larger than the sum of its proper divisors (5355275).

16065813 is an equidigital number, since it uses as much as digits as its factorization.

16065813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5355274.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 16065813 is about 4008.2181826842. The cubic root of 16065813 is about 252.3292339469.

The spelling of 16065813 in words is "sixteen million, sixty-five thousand, eight hundred thirteen".