1720985006 has 16 divisors (see below), whose sum is σ = 2786346864. Its totient is φ = 792502464.

The previous prime is 1720985003. The next prime is 1720985027. The reversal of 1720985006 is 6005890271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720985003) 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, 63191 + ... + 86226.

It is an arithmetic number, because the mean of its divisors is an integer number (174146679).

Almost surely, 2^1720985006 is an apocalyptic number.

1720985006 is a deficient number, since it is larger than the sum of its proper divisors (1065361858).

1720985006 is a wasteful number, since it uses less digits than its factorization.

1720985006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149875.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 1720985006 is about 41484.7563087937. The cubic root of 1720985006 is about 1198.3739564435.

The spelling of 1720985006 in words is "one billion, seven hundred twenty million, nine hundred eighty-five thousand, six".