1966563 has 12 divisors (see below), whose sum is σ = 2853240. Its totient is φ = 1305216.

The previous prime is 1966561. The next prime is 1966583. The reversal of 1966563 is 3656691.

1966563 is a `hidden beast` number, since 1 + 96 + 6 + 563 = 666.

It is not a de Polignac number, because 1966563 - 2¹ = 1966561 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1966561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2868 + ... + 3486.

It is an arithmetic number, because the mean of its divisors is an integer number (237770).

2^1966563 is an apocalyptic number.

1966563 is a deficient number, since it is larger than the sum of its proper divisors (886677).

1966563 is a wasteful number, since it uses less digits than its factorization.

1966563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 975 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 1966563 is about 1402.3419697064. The cubic root of 1966563 is about 125.2860223638.

The spelling of 1966563 in words is "one million, nine hundred sixty-six thousand, five hundred sixty-three".