16140645 has 12 divisors (see below), whose sum is σ = 27977196. Its totient is φ = 8608320.

The previous prime is 16140637. The next prime is 16140659. The reversal of 16140645 is 54604161.

16140645 is a `hidden beast` number, since 1 + 6 + 14 + 0 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6066369 + 10074276 = 2463^2 + 3174^2 .

It is not a de Polignac number, because 16140645 - 2³ = 16140637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179296 + ... + 179385.

It is an arithmetic number, because the mean of its divisors is an integer number (2331433).

Almost surely, 2^16140645 is an apocalyptic number.

16140645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16140645 is a deficient number, since it is larger than the sum of its proper divisors (11836551).

16140645 is a wasteful number, since it uses less digits than its factorization.

16140645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358692 (or 358689 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 16140645 is about 4017.5421590818. The cubic root of 16140645 is about 252.7203970530.

The spelling of 16140645 in words is "sixteen million, one hundred forty thousand, six hundred forty-five".