13640375 has 48 divisors (see below), whose sum is σ = 21127392. Its totient is φ = 8736000.

The previous prime is 13640371. The next prime is 13640381. The reversal of 13640375 is 57304631.

It is not a de Polignac number, because 13640375 - 2² = 13640371 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 (13640371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 104060 + ... + 104190.

It is an arithmetic number, because the mean of its divisors is an integer number (440154).

Almost surely, 2^13640375 is an apocalyptic number.

13640375 is a deficient number, since it is larger than the sum of its proper divisors (7487017).

13640375 is a wasteful number, since it uses less digits than its factorization.

13640375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 160 counting only the distinct ones).

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

The square root of 13640375 is about 3693.2878306463. The cubic root of 13640375 is about 238.9326152356.

The spelling of 13640375 in words is "thirteen million, six hundred forty thousand, three hundred seventy-five".