13745777 has 2 divisors, whose sum is σ = 13745778. Its totient is φ = 13745776.

The previous prime is 13745749. The next prime is 13745791. The reversal of 13745777 is 77754731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12737761 + 1008016 = 3569^2 + 1004^2 .

It is a cyclic number.

It is not a de Polignac number, because 13745777 - 2⁸ = 13745521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13745737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6872888 + 6872889.

It is an arithmetic number, because the mean of its divisors is an integer number (6872889).

Almost surely, 2^13745777 is an apocalyptic number.

It is an amenable number.

13745777 is a deficient number, since it is larger than the sum of its proper divisors (1).

13745777 is an equidigital number, since it uses as much as digits as its factorization.

13745777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144060, while the sum is 41.

The square root of 13745777 is about 3707.5297706155. The cubic root of 13745777 is about 239.5464640799.

The spelling of 13745777 in words is "thirteen million, seven hundred forty-five thousand, seven hundred seventy-seven".