13603745 has 12 divisors (see below), whose sum is σ = 16547580. Its totient is φ = 10736064.

The previous prime is 13603703. The next prime is 13603771. The reversal of 13603745 is 54730631.

It can be written as a sum of positive squares in 6 ways, for example, as 1982464 + 11621281 = 1408^2 + 3409^2 .

It is not a de Polignac number, because 13603745 - 2⁸ = 13603489 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, 59291 + ... + 59519.

It is an arithmetic number, because the mean of its divisors is an integer number (1378965).

Almost surely, 2^13603745 is an apocalyptic number.

It is an amenable number.

13603745 is a deficient number, since it is larger than the sum of its proper divisors (2943835).

13603745 is an equidigital number, since it uses as much as digits as its factorization.

13603745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 13603745 is about 3688.3255008201. The cubic root of 13603745 is about 238.7185461519.

The spelling of 13603745 in words is "thirteen million, six hundred three thousand, seven hundred forty-five".