1966435 has 4 divisors (see below), whose sum is σ = 2359728. Its totient is φ = 1573144.

The previous prime is 1966429. The next prime is 1966463. The reversal of 1966435 is 5346691.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1966435 - 2³ = 1966427 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 1966435.

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, 196639 + ... + 196648.

It is an arithmetic number, because the mean of its divisors is an integer number (589932).

2^1966435 is an apocalyptic number.

1966435 is a deficient number, since it is larger than the sum of its proper divisors (393293).

1966435 is an equidigital number, since it uses as much as digits as its factorization.

1966435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393292.

The product of its digits is 19440, while the sum is 34.

The square root of 1966435 is about 1402.2963310228. The cubic root of 1966435 is about 125.2833040919.

It can be divided in two parts, 1966 and 435, that added together give a 4-th power (2401 = 7⁴).

The spelling of 1966435 in words is "one million, nine hundred sixty-six thousand, four hundred thirty-five".