500681966 has 4 divisors (see below), whose sum is σ = 751022952. Its totient is φ = 250340982.

The previous prime is 500681959. The next prime is 500681969. The reversal of 500681966 is 669186005.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500681969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125170490 + ... + 125170493.

It is an arithmetic number, because the mean of its divisors is an integer number (187755738).

Almost surely, 2^500681966 is an apocalyptic number.

500681966 is a deficient number, since it is larger than the sum of its proper divisors (250340986).

500681966 is a wasteful number, since it uses less digits than its factorization.

500681966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250340985.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 500681966 is about 22375.9238021584. The cubic root of 500681966 is about 794.0612132314.

The spelling of 500681966 in words is "five hundred million, six hundred eighty-one thousand, nine hundred sixty-six".