13205670 has 32 divisors (see below), whose sum is σ = 32552928. Its totient is φ = 3426048.

The previous prime is 13205669. The next prime is 13205671. The reversal of 13205670 is 7650231.

It is an interprime number because it is at equal distance from previous prime (13205669) and next prime (13205671).

It is a self number, because there is not a number n which added to its sum of digits gives 13205670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13205671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4839 + ... + 7058.

It is an arithmetic number, because the mean of its divisors is an integer number (1017279).

Almost surely, 2^13205670 is an apocalyptic number.

13205670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13205670 is an abundant number, since it is smaller than the sum of its proper divisors (19347258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13205670 is a wasteful number, since it uses less digits than its factorization.

13205670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11944.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 13205670 is about 3633.9606492091. The cubic root of 13205670 is about 236.3669838597.

The spelling of 13205670 in words is "thirteen million, two hundred five thousand, six hundred seventy".