13691530 has 8 divisors (see below), whose sum is σ = 24644772. Its totient is φ = 5476608.

The previous prime is 13691527. The next prime is 13691537. The reversal of 13691530 is 3519631.

It can be written as a sum of positive squares in 2 ways, for example, as 13227769 + 463761 = 3637^2 + 681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13691537) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 684567 + ... + 684586.

Almost surely, 2^13691530 is an apocalyptic number.

13691530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13691530 is a deficient number, since it is larger than the sum of its proper divisors (10953242).

13691530 is a wasteful number, since it uses less digits than its factorization.

13691530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369160.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 13691530 is about 3700.2067509803. The cubic root of 13691530 is about 239.2309293794.

The spelling of 13691530 in words is "thirteen million, six hundred ninety-one thousand, five hundred thirty".