16535645 has 16 divisors (see below), whose sum is σ = 24012288. Its totient is φ = 10671360.

The previous prime is 16535641. The next prime is 16535647. The reversal of 16535645 is 54653561.

It is not a de Polignac number, because 16535645 - 2² = 16535641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16535641) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13301 + ... + 14490.

It is an arithmetic number, because the mean of its divisors is an integer number (1500768).

Almost surely, 2^16535645 is an apocalyptic number.

It is an amenable number.

16535645 is a deficient number, since it is larger than the sum of its proper divisors (7476643).

16535645 is a wasteful number, since it uses less digits than its factorization.

16535645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27820.

The product of its digits is 54000, while the sum is 35.

The square root of 16535645 is about 4066.4044314357. The cubic root of 16535645 is about 254.7653615054.

The spelling of 16535645 in words is "sixteen million, five hundred thirty-five thousand, six hundred forty-five".