13740437 has 4 divisors (see below), whose sum is σ = 14548716. Its totient is φ = 12932160.

The previous prime is 13740421. The next prime is 13740449. The reversal of 13740437 is 73404731.

13740437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12117361 + 1623076 = 3481^2 + 1274^2 .

It is a cyclic number.

It is not a de Polignac number, because 13740437 - 2⁴ = 13740421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13740457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404114 + ... + 404147.

It is an arithmetic number, because the mean of its divisors is an integer number (3637179).

Almost surely, 2^13740437 is an apocalyptic number.

13740437 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13740437 is a deficient number, since it is larger than the sum of its proper divisors (808279).

13740437 is an equidigital number, since it uses as much as digits as its factorization.

13740437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808278.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 13740437 is about 3706.8095446084. The cubic root of 13740437 is about 239.5154401565.

The spelling of 13740437 in words is "thirteen million, seven hundred forty thousand, four hundred thirty-seven".