13670738 has 4 divisors (see below), whose sum is σ = 20506110. Its totient is φ = 6835368.

The previous prime is 13670731. The next prime is 13670743. The reversal of 13670738 is 83707631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11812969 + 1857769 = 3437^2 + 1363^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13670698 and 13670707.

It is not an unprimeable number, because it can be changed into a prime (13670731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3417683 + ... + 3417686.

Almost surely, 2^13670738 is an apocalyptic number.

13670738 is a deficient number, since it is larger than the sum of its proper divisors (6835372).

13670738 is an equidigital number, since it uses as much as digits as its factorization.

13670738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6835371.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 13670738 is about 3697.3961107785. The cubic root of 13670738 is about 239.1097690830.

The spelling of 13670738 in words is "thirteen million, six hundred seventy thousand, seven hundred thirty-eight".