13705406 has 32 divisors (see below), whose sum is σ = 24379488. Its totient is φ = 5696640.

The previous prime is 13705387. The next prime is 13705409. The reversal of 13705406 is 60450731.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13705409) 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 15 ways as a sum of consecutive naturals, for example, 49340 + ... + 49616.

It is an arithmetic number, because the mean of its divisors is an integer number (761859).

Almost surely, 2^13705406 is an apocalyptic number.

13705406 is a deficient number, since it is larger than the sum of its proper divisors (10674082).

13705406 is a wasteful number, since it uses less digits than its factorization.

13705406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 13705406 is about 3702.0813065085. The cubic root of 13705406 is about 239.3117201450.

It can be divided in two parts, 1370 and 5406, that added together give a palindrome (6776).

The spelling of 13705406 in words is "thirteen million, seven hundred five thousand, four hundred six".