13640455 has 8 divisors (see below), whose sum is σ = 16452000. Its totient is φ = 10856736.

The previous prime is 13640453. The next prime is 13640479. The reversal of 13640455 is 55404631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13640455 - 2¹ = 13640453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13640453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5860 + ... + 7849.

It is an arithmetic number, because the mean of its divisors is an integer number (2056500).

Almost surely, 2^13640455 is an apocalyptic number.

13640455 is a deficient number, since it is larger than the sum of its proper divisors (2811545).

13640455 is a wasteful number, since it uses less digits than its factorization.

13640455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13913.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 13640455 is about 3693.2986610888. The cubic root of 13640455 is about 238.9330823433.

The spelling of 13640455 in words is "thirteen million, six hundred forty thousand, four hundred fifty-five".