683757221663 has 8 divisors (see below), whose sum is σ = 724027428432. Its totient is φ = 643492480896.

The previous prime is 683757221657. The next prime is 683757221681. The reversal of 683757221663 is 366122757386.

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

It is a cyclic number.

It is not a de Polignac number, because 683757221663 - 2¹² = 683757217567 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 683757221599 and 683757221608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683757224663) 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, 1107545 + ... + 1610642.

It is an arithmetic number, because the mean of its divisors is an integer number (90503428554).

Almost surely, 2^683757221663 is an apocalyptic number.

683757221663 is a deficient number, since it is larger than the sum of its proper divisors (40270206769).

683757221663 is a wasteful number, since it uses less digits than its factorization.

683757221663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733001.

The product of its digits is 15240960, while the sum is 56.

The spelling of 683757221663 in words is "six hundred eighty-three billion, seven hundred fifty-seven million, two hundred twenty-one thousand, six hundred sixty-three".