13750645 has 16 divisors (see below), whose sum is σ = 16937712. Its totient is φ = 10713600.

The previous prime is 13750609. The next prime is 13750657. The reversal of 13750645 is 54605731.

It can be written as a sum of positive squares in 8 ways, for example, as 1034289 + 12716356 = 1017^2 + 3566^2 .

It is not a de Polignac number, because 13750645 - 2⁹ = 13750133 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 36679 + ... + 37051.

It is an arithmetic number, because the mean of its divisors is an integer number (1058607).

Almost surely, 2^13750645 is an apocalyptic number.

It is an amenable number.

13750645 is a deficient number, since it is larger than the sum of its proper divisors (3187067).

13750645 is a wasteful number, since it uses less digits than its factorization.

13750645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 13750645 is about 3708.1862143102. The cubic root of 13750645 is about 239.5747388137.

The spelling of 13750645 in words is "thirteen million, seven hundred fifty thousand, six hundred forty-five".