683199780481 has 3 divisors (see below), whose sum is σ = 683200607041. Its totient is φ = 683198953922.

The previous prime is 683199780379. The next prime is 683199780499. The reversal of 683199780481 is 184087991386.

The square root of 683199780481 is 826559.

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 is not a de Polignac number, because 683199780481 - 2⁷ = 683199780353 is a prime.

It is a super-2 number, since 2×683199780481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (683199780181) 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, 413280 + ... + 1239838.

Almost surely, 2^683199780481 is an apocalyptic number.

683199780481 is the 826559-th square number.

683199780481 is the 413280-th centered octagonal number.

It is an amenable number.

683199780481 is a deficient number, since it is larger than the sum of its proper divisors (826560).

683199780481 is an frugal number, since it uses more digits than its factorization.

683199780481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653118 (or 826559 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 64.

Multiplying 683199780481 by its sum of digits (64), we get a square (43724785950784 = 6612472²).

The spelling of 683199780481 in words is "six hundred eighty-three billion, one hundred ninety-nine million, seven hundred eighty thousand, four hundred eighty-one".