13780773 has 12 divisors (see below), whose sum is σ = 20643168. Its totient is φ = 9187020.

The previous prime is 13780763. The next prime is 13780783. The reversal of 13780773 is 37708731.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13780763) and next prime (13780783).

It is not a de Polignac number, because 13780773 - 2¹³ = 13772581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13780733) 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 11 ways as a sum of consecutive naturals, for example, 28113 + ... + 28598.

It is an arithmetic number, because the mean of its divisors is an integer number (1720264).

Almost surely, 2^13780773 is an apocalyptic number.

It is an amenable number.

13780773 is a deficient number, since it is larger than the sum of its proper divisors (6862395).

13780773 is an frugal number, since it uses more digits than its factorization.

13780773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56726 (or 56714 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 13780773 is about 3712.2463549716. The cubic root of 13780773 is about 239.7495825538.

The spelling of 13780773 in words is "thirteen million, seven hundred eighty thousand, seven hundred seventy-three".