1720324668 has 48 divisors (see below), whose sum is σ = 4099092480. Its totient is φ = 561347904.

The previous prime is 1720324667. The next prime is 1720324703. The reversal of 1720324668 is 8664230271.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720324667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301821 + ... + 307467.

It is an arithmetic number, because the mean of its divisors is an integer number (85397760).

Almost surely, 2^1720324668 is an apocalyptic number.

It is an amenable number.

1720324668 is an abundant number, since it is smaller than the sum of its proper divisors (2378767812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1720324668 is a wasteful number, since it uses less digits than its factorization.

1720324668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6186 (or 6184 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 1720324668 is about 41476.7967422751. The cubic root of 1720324668 is about 1198.2206657231.

The spelling of 1720324668 in words is "one billion, seven hundred twenty million, three hundred twenty-four thousand, six hundred sixty-eight".