1720966 has 8 divisors (see below), whose sum is σ = 2780064. Its totient is φ = 794280.

The previous prime is 1720951. The next prime is 1720973. The reversal of 1720966 is 6690271.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33070 + ... + 33121.

It is an arithmetic number, because the mean of its divisors is an integer number (347508).

2^1720966 is an apocalyptic number.

1720966 is a deficient number, since it is larger than the sum of its proper divisors (1059098).

1720966 is a wasteful number, since it uses less digits than its factorization.

1720966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66206.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1720966 is about 1311.8559372126. The cubic root of 1720966 is about 119.8369544943.

The spelling of 1720966 in words is "one million, seven hundred twenty thousand, nine hundred sixty-six".