1966955 has 8 divisors (see below), whose sum is σ = 2372112. Its totient is φ = 1565728.

The previous prime is 1966933. The next prime is 1966963. The reversal of 1966955 is 5596691.

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 1966955 - 2¹² = 1962859 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269 + ... + 2001.

It is an arithmetic number, because the mean of its divisors is an integer number (296514).

2^1966955 is an apocalyptic number.

1966955 is a deficient number, since it is larger than the sum of its proper divisors (405157).

1966955 is a wasteful number, since it uses less digits than its factorization.

1966955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965.

The product of its digits is 72900, while the sum is 41.

The square root of 1966955 is about 1402.4817289362. The cubic root of 1966955 is about 125.2943463378.

The spelling of 1966955 in words is "one million, nine hundred sixty-six thousand, nine hundred fifty-five".