220670 has 8 divisors (see below), whose sum is σ = 397224. Its totient is φ = 88264.

The previous prime is 220667. The next prime is 220673. The reversal of 220670 is 76022.

220670 = T₅₄ + T₅₅ + ... + T₁₁₃.

It is an interprime number because it is at equal distance from previous prime (220667) and next prime (220673).

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 220670.

It is not an unprimeable number, because it can be changed into a prime (220673) 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, 11024 + ... + 11043.

It is an arithmetic number, because the mean of its divisors is an integer number (49653).

2²²⁰⁶⁷⁰ is an apocalyptic number.

220670 is a deficient number, since it is larger than the sum of its proper divisors (176554).

220670 is a wasteful number, since it uses less digits than its factorization.

220670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22074.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 220670 is about 469.7552554256. The cubic root of 220670 is about 60.4293280374.

Adding to 220670 its reverse (76022), we get a palindrome (296692).

The spelling of 220670 in words is "two hundred twenty thousand, six hundred seventy".