13670391 has 8 divisors (see below), whose sum is σ = 20831104. Its totient is φ = 7811640.

The previous prime is 13670351. The next prime is 13670413. The reversal of 13670391 is 19307631.

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

It is not a de Polignac number, because 13670391 - 2¹³ = 13662199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13670341) 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, 325465 + ... + 325506.

It is an arithmetic number, because the mean of its divisors is an integer number (2603888).

Almost surely, 2^13670391 is an apocalyptic number.

13670391 is a deficient number, since it is larger than the sum of its proper divisors (7160713).

13670391 is an equidigital number, since it uses as much as digits as its factorization.

13670391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650981.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 13670391 is about 3697.3491855652. The cubic root of 13670391 is about 239.1077459834.

The spelling of 13670391 in words is "thirteen million, six hundred seventy thousand, three hundred ninety-one".