683683521 has 8 divisors (see below), whose sum is σ = 936215424. Its totient is φ = 443470320.

The previous prime is 683683513. The next prime is 683683529. The reversal of 683683521 is 125386386.

It is an interprime number because it is at equal distance from previous prime (683683513) and next prime (683683529).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 683683521 - 2³ = 683683513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (683683529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3079545 + ... + 3079766.

It is an arithmetic number, because the mean of its divisors is an integer number (117026928).

Almost surely, 2^683683521 is an apocalyptic number.

It is an amenable number.

683683521 is a deficient number, since it is larger than the sum of its proper divisors (252531903).

683683521 is a wasteful number, since it uses less digits than its factorization.

683683521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6159351.

The product of its digits is 207360, while the sum is 42.

The square root of 683683521 is about 26147.3425227116. The cubic root of 683683521 is about 880.9509009207.

The spelling of 683683521 in words is "six hundred eighty-three million, six hundred eighty-three thousand, five hundred twenty-one".