1966550 has 24 divisors (see below), whose sum is σ = 3760176. Its totient is φ = 764640.

The previous prime is 1966511. The next prime is 1966561. The reversal of 1966550 is 556691.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1319 + ... + 2381.

It is an arithmetic number, because the mean of its divisors is an integer number (156674).

2^1966550 is an apocalyptic number.

1966550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1966550 is a deficient number, since it is larger than the sum of its proper divisors (1793626).

1966550 is a wasteful number, since it uses less digits than its factorization.

1966550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112 (or 1107 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 1966550 is about 1402.3373345954. The cubic root of 1966550 is about 125.2857462947.

The spelling of 1966550 in words is "one million, nine hundred sixty-six thousand, five hundred fifty".