13421655 has 24 divisors (see below), whose sum is σ = 25054848. Its totient is φ = 6607296.

The previous prime is 13421651. The next prime is 13421671. The reversal of 13421655 is 55612431.

13421655 is a `hidden beast` number, since 1 + 3 + 4 + 2 + 1 + 655 = 666.

It is not a de Polignac number, because 13421655 - 2² = 13421651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13421651) 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 23 ways as a sum of consecutive naturals, for example, 10887 + ... + 12056.

It is an arithmetic number, because the mean of its divisors is an integer number (1043952).

Almost surely, 2^13421655 is an apocalyptic number.

13421655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13421655 is a deficient number, since it is larger than the sum of its proper divisors (11633193).

13421655 is a wasteful number, since it uses less digits than its factorization.

13421655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22967 (or 22964 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 13421655 is about 3663.5576971026. The cubic root of 13421655 is about 237.6486530133.

The spelling of 13421655 in words is "thirteen million, four hundred twenty-one thousand, six hundred fifty-five".