1966606 has 16 divisors (see below), whose sum is σ = 3129840. Its totient is φ = 925120.

The previous prime is 1966603. The next prime is 1966607. The reversal of 1966606 is 6066691.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1965 + ... + 2791.

It is an arithmetic number, because the mean of its divisors is an integer number (195615).

2^1966606 is an apocalyptic number.

1966606 is a deficient number, since it is larger than the sum of its proper divisors (1163234).

1966606 is a wasteful number, since it uses less digits than its factorization.

1966606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 1966606 is about 1402.3573011184. The cubic root of 1966606 is about 125.2869355068.

The spelling of 1966606 in words is "one million, nine hundred sixty-six thousand, six hundred six".