13770638 has 8 divisors (see below), whose sum is σ = 23606832. Its totient is φ = 5901696.

The previous prime is 13770637. The next prime is 13770667. The reversal of 13770638 is 83607731.

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

It is a junction number, because it is equal to n+sod(n) for n = 13770598 and 13770607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13770637) 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 3 ways as a sum of consecutive naturals, for example, 491795 + ... + 491822.

It is an arithmetic number, because the mean of its divisors is an integer number (2950854).

Almost surely, 2^13770638 is an apocalyptic number.

13770638 is a deficient number, since it is larger than the sum of its proper divisors (9836194).

13770638 is an equidigital number, since it uses as much as digits as its factorization.

13770638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983626.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 13770638 is about 3710.8810274650. The cubic root of 13770638 is about 239.6907939324.

The spelling of 13770638 in words is "thirteen million, seven hundred seventy thousand, six hundred thirty-eight".