13773774 has 64 divisors (see below), whose sum is σ = 33841152. Its totient is φ = 3648000.

The previous prime is 13773769. The next prime is 13773779. The reversal of 13773774 is 47737731.

It is an interprime number because it is at equal distance from previous prime (13773769) and next prime (13773779).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13773779) 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 31 ways as a sum of consecutive naturals, for example, 72019 + ... + 72209.

It is an arithmetic number, because the mean of its divisors is an integer number (528768).

Almost surely, 2^13773774 is an apocalyptic number.

13773774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13773774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16920576).

13773774 is an abundant number, since it is smaller than the sum of its proper divisors (20067378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13773774 is a wasteful number, since it uses less digits than its factorization.

13773774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321.

The product of its digits is 86436, while the sum is 39.

The square root of 13773774 is about 3711.3035445784. The cubic root of 13773774 is about 239.7089875527.

It can be divided in two parts, 1377 and 3774, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 13773774 in words is "thirteen million, seven hundred seventy-three thousand, seven hundred seventy-four".