35670221 has 8 divisors (see below), whose sum is σ = 36191160. Its totient is φ = 35152128.

The previous prime is 35670179. The next prime is 35670223. The reversal of 35670221 is 12207653.

It can be written as a sum of positive squares in 4 ways, for example, as 12040900 + 23629321 = 3470^2 + 4861^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 35670221 - 2⁶ = 35670157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35670223) 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, 40235 + ... + 41111.

It is an arithmetic number, because the mean of its divisors is an integer number (4523895).

Almost surely, 2^35670221 is an apocalyptic number.

It is an amenable number.

35670221 is a deficient number, since it is larger than the sum of its proper divisors (520939).

35670221 is an equidigital number, since it uses as much as digits as its factorization.

35670221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 35670221 is about 5972.4551902882. The cubic root of 35670221 is about 329.1813838922.

Adding to 35670221 its reverse (12207653), we get a palindrome (47877874).

The spelling of 35670221 in words is "thirty-five million, six hundred seventy thousand, two hundred twenty-one".