13419661 has 2 divisors, whose sum is σ = 13419662. Its totient is φ = 13419660.

The previous prime is 13419589. The next prime is 13419673. The reversal of 13419661 is 16691431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7873636 + 5546025 = 2806^2 + 2355^2 .

It is an emirp because it is prime and its reverse (16691431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13419661 - 2⁷ = 13419533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13419691) 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 as a sum of consecutive naturals, namely, 6709830 + 6709831.

It is an arithmetic number, because the mean of its divisors is an integer number (6709831).

Almost surely, 2^13419661 is an apocalyptic number.

It is an amenable number.

13419661 is a deficient number, since it is larger than the sum of its proper divisors (1).

13419661 is an equidigital number, since it uses as much as digits as its factorization.

13419661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 13419661 is about 3663.2855471557. The cubic root of 13419661 is about 237.6368836032.

The spelling of 13419661 in words is "thirteen million, four hundred nineteen thousand, six hundred sixty-one".