16040645 has 8 divisors (see below), whose sum is σ = 19390104. Its totient is φ = 12738304.

The previous prime is 16040641. The next prime is 16040653. The reversal of 16040645 is 54604061.

It is a happy number.

16040645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1653796 + 14386849 = 1286^2 + 3793^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16040645 - 2² = 16040641 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 (16040641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11024 + ... + 12393.

It is an arithmetic number, because the mean of its divisors is an integer number (2423763).

Almost surely, 2^16040645 is an apocalyptic number.

It is an amenable number.

16040645 is a deficient number, since it is larger than the sum of its proper divisors (3349459).

16040645 is a wasteful number, since it uses less digits than its factorization.

16040645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23559.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 16040645 is about 4005.0774024980. The cubic root of 16040645 is about 252.1974024351.

The spelling of 16040645 in words is "sixteen million, forty thousand, six hundred forty-five".