13621367 has 2 divisors, whose sum is σ = 13621368. Its totient is φ = 13621366.

The previous prime is 13621357. The next prime is 13621373. The reversal of 13621367 is 76312631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13621367 - 2⁶ = 13621303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13621357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6810683 + 6810684.

It is an arithmetic number, because the mean of its divisors is an integer number (6810684).

Almost surely, 2^13621367 is an apocalyptic number.

13621367 is a deficient number, since it is larger than the sum of its proper divisors (1).

13621367 is an equidigital number, since it uses as much as digits as its factorization.

13621367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 29.

The square root of 13621367 is about 3690.7136166330. The cubic root of 13621367 is about 238.8215786405.

Adding to 13621367 its reverse (76312631), we get a palindrome (89933998).

The spelling of 13621367 in words is "thirteen million, six hundred twenty-one thousand, three hundred sixty-seven".