19970 has 8 divisors (see below), whose sum is σ = 35964. Its totient is φ = 7984.

The previous prime is 19963. The next prime is 19973. The reversal of 19970 is 7991.

It can be written as a sum of positive squares in 2 ways, for example, as 17161 + 2809 = 131^2 + 53^2 .

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

It is not an unprimeable number, because it can be changed into a prime (19973) by changing a digit.

19970 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989 + ... + 1008.

2¹⁹⁹⁷⁰ is an apocalyptic number.

19970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19970 is a deficient number, since it is larger than the sum of its proper divisors (15994).

19970 is a wasteful number, since it uses less digits than its factorization.

19970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 19970 is about 141.3152504155. The cubic root of 19970 is about 27.1305972862.

It can be divided in two parts, 19 and 970, that added together give a palindrome (989).

The spelling of 19970 in words is "nineteen thousand, nine hundred seventy".