13403705 has 12 divisors (see below), whose sum is σ = 18710820. Its totient is φ = 9190944.

The previous prime is 13403681. The next prime is 13403723. The reversal of 13403705 is 50730431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4923961 + 8479744 = 2219^2 + 2912^2 .

It is not a de Polignac number, because 13403705 - 2⁸ = 13403449 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27110 + ... + 27599.

It is an arithmetic number, because the mean of its divisors is an integer number (1559235).

Almost surely, 2^13403705 is an apocalyptic number.

It is an amenable number.

13403705 is a deficient number, since it is larger than the sum of its proper divisors (5307115).

13403705 is an equidigital number, since it uses as much as digits as its factorization.

13403705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54728 (or 54721 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 13403705 is about 3661.1070730040. The cubic root of 13403705 is about 237.5426626960.

The spelling of 13403705 in words is "thirteen million, four hundred three thousand, seven hundred five".