17420679 has 6 divisors (see below), whose sum is σ = 25163216. Its totient is φ = 11613780.

The previous prime is 17420653. The next prime is 17420681. The reversal of 17420679 is 97602471.

It is a happy number.

It is not a de Polignac number, because 17420679 - 2⁸ = 17420423 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 (17420609) 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 in 5 ways as a sum of consecutive naturals, for example, 967807 + ... + 967824.

Almost surely, 2^17420679 is an apocalyptic number.

17420679 is a deficient number, since it is larger than the sum of its proper divisors (7742537).

17420679 is a wasteful number, since it uses less digits than its factorization.

17420679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935637 (or 1935634 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 17420679 is about 4173.8086923097. The cubic root of 17420679 is about 259.2318501528.

The spelling of 17420679 in words is "seventeen million, four hundred twenty thousand, six hundred seventy-nine".