170607421 has 4 divisors (see below), whose sum is σ = 170643100. Its totient is φ = 170571744.

The previous prime is 170607419. The next prime is 170607431. The reversal of 170607421 is 124706071.

170607421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124706071 = 7 ⋅17815153.

It can be written as a sum of positive squares in 2 ways, for example, as 155900196 + 14707225 = 12486^2 + 3835^2 .

It is a cyclic number.

It is not a de Polignac number, because 170607421 - 2¹ = 170607419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 170607421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170607401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9306 + ... + 20683.

It is an arithmetic number, because the mean of its divisors is an integer number (42660775).

Almost surely, 2^170607421 is an apocalyptic number.

It is an amenable number.

170607421 is a deficient number, since it is larger than the sum of its proper divisors (35679).

170607421 is an equidigital number, since it uses as much as digits as its factorization.

170607421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35678.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 170607421 is about 13061.6775721957. The cubic root of 170607421 is about 554.6248266598.

The spelling of 170607421 in words is "one hundred seventy million, six hundred seven thousand, four hundred twenty-one".