170420727 has 8 divisors (see below), whose sum is σ = 227309680. Its totient is φ = 113572800.

The previous prime is 170420711. The next prime is 170420741. The reversal of 170420727 is 727024071.

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

It is not a de Polignac number, because 170420727 - 2⁴ = 170420711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 170420694 and 170420703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170420707) 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, 1299 + ... + 18507.

It is an arithmetic number, because the mean of its divisors is an integer number (28413710).

Almost surely, 2^170420727 is an apocalyptic number.

170420727 is a deficient number, since it is larger than the sum of its proper divisors (56888953).

170420727 is a wasteful number, since it uses less digits than its factorization.

170420727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20513.

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 170420727 is about 13054.5289842261. The cubic root of 170420727 is about 554.4224460146.

Adding to 170420727 its reverse (727024071), we get a palindrome (897444798).

The spelling of 170420727 in words is "one hundred seventy million, four hundred twenty thousand, seven hundred twenty-seven".