13487437 has 2 divisors, whose sum is σ = 13487438. Its totient is φ = 13487436.

The previous prime is 13487393. The next prime is 13487447. The reversal of 13487437 is 73478431.

13487437 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11964681 + 1522756 = 3459^2 + 1234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13487437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13487396 and 13487405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13487447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6743718 + 6743719.

It is an arithmetic number, because the mean of its divisors is an integer number (6743719).

Almost surely, 2^13487437 is an apocalyptic number.

It is an amenable number.

13487437 is a deficient number, since it is larger than the sum of its proper divisors (1).

13487437 is an equidigital number, since it uses as much as digits as its factorization.

13487437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 37.

The square root of 13487437 is about 3672.5246084948. The cubic root of 13487437 is about 238.0362736888.

It can be divided in two parts, 13487 and 437, that added together give a square (13924 = 118²).

The spelling of 13487437 in words is "thirteen million, four hundred eighty-seven thousand, four hundred thirty-seven".