13209677 has 8 divisors (see below), whose sum is σ = 14331576. Its totient is φ = 12102912.

The previous prime is 13209673. The next prime is 13209727. The reversal of 13209677 is 77690231.

It can be written as a sum of positive squares in 4 ways, for example, as 2114116 + 11095561 = 1454^2 + 3331^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13209677 - 2² = 13209673 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13209673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1928 + ... + 5489.

It is an arithmetic number, because the mean of its divisors is an integer number (1791447).

Almost surely, 2^13209677 is an apocalyptic number.

It is an amenable number.

13209677 is a deficient number, since it is larger than the sum of its proper divisors (1121899).

13209677 is a wasteful number, since it uses less digits than its factorization.

13209677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7567.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 13209677 is about 3634.5119342217. The cubic root of 13209677 is about 236.3908884079.

It can be divided in two parts, 13 and 209677, that multiplied together give a square (2725801 = 1651²).

The spelling of 13209677 in words is "thirteen million, two hundred nine thousand, six hundred seventy-seven".