1966975 has 24 divisors (see below), whose sum is σ = 2656080. Its totient is φ = 1440000.

The previous prime is 1966973. The next prime is 1966999. The reversal of 1966975 is 5796691.

It is not a de Polignac number, because 1966975 - 2¹ = 1966973 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 9³ + 6⁷ + 6⁸ + 9⁴ + 7 + 5³ .

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19425 + ... + 19525.

It is an arithmetic number, because the mean of its divisors is an integer number (110670).

2^1966975 is an apocalyptic number.

1966975 is a deficient number, since it is larger than the sum of its proper divisors (689105).

1966975 is a wasteful number, since it uses less digits than its factorization.

1966975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 166 counting only the distinct ones).

The product of its digits is 102060, while the sum is 43.

The square root of 1966975 is about 1402.4888591358. The cubic root of 1966975 is about 125.2947710007.

The spelling of 1966975 in words is "one million, nine hundred sixty-six thousand, nine hundred seventy-five".