13705457 has 2 divisors, whose sum is σ = 13705458. Its totient is φ = 13705456.

The previous prime is 13705427. The next prime is 13705463. The reversal of 13705457 is 75450731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9709456 + 3996001 = 3116^2 + 1999^2 .

It is an emirp because it is prime and its reverse (75450731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13705457 - 2¹⁰ = 13704433 is a prime.

It is not a weakly prime, because it can be changed into another prime (13705427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6852728 + 6852729.

It is an arithmetic number, because the mean of its divisors is an integer number (6852729).

Almost surely, 2^13705457 is an apocalyptic number.

It is an amenable number.

13705457 is a deficient number, since it is larger than the sum of its proper divisors (1).

13705457 is an equidigital number, since it uses as much as digits as its factorization.

13705457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 13705457 is about 3702.0881945194. The cubic root of 13705457 is about 239.3120169837.

The spelling of 13705457 in words is "thirteen million, seven hundred five thousand, four hundred fifty-seven".