683351881 has 3 divisors (see below), whose sum is σ = 683378023. Its totient is φ = 683325740.

The previous prime is 683351869. The next prime is 683351897. The reversal of 683351881 is 188153386.

The square root of 683351881 is 26141.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 480004281 + 203347600 = 21909^2 + 14260^2 .

It is not a de Polignac number, because 683351881 - 2⁵ = 683351849 is a prime.

It is a super-3 number, since 3×683351881³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (683351831) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 13071 + ... + 39211.

Almost surely, 2^683351881 is an apocalyptic number.

683351881 is the 26141-st square number.

683351881 is the 13071-st centered octagonal number.

It is an amenable number.

683351881 is a deficient number, since it is larger than the sum of its proper divisors (26142).

683351881 is an frugal number, since it uses more digits than its factorization.

683351881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52282 (or 26141 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The cubic root of 683351881 is about 880.8084345112.

The spelling of 683351881 in words is "six hundred eighty-three million, three hundred fifty-one thousand, eight hundred eighty-one".