13740787 has 2 divisors, whose sum is σ = 13740788. Its totient is φ = 13740786.

The previous prime is 13740763. The next prime is 13740791. The reversal of 13740787 is 78704731.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13740787 is a prime.

It is not a weakly prime, because it can be changed into another prime (13740757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6870393 + 6870394.

It is an arithmetic number, because the mean of its divisors is an integer number (6870394).

Almost surely, 2^13740787 is an apocalyptic number.

13740787 is a deficient number, since it is larger than the sum of its proper divisors (1).

13740787 is an equidigital number, since it uses as much as digits as its factorization.

13740787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 13740787 is about 3706.8567547182. The cubic root of 13740787 is about 239.5174738058.

The spelling of 13740787 in words is "thirteen million, seven hundred forty thousand, seven hundred eighty-seven".