683963543 has 4 divisors (see below), whose sum is σ = 686801808. Its totient is φ = 681125280.

The previous prime is 683963513. The next prime is 683963557. The reversal of 683963543 is 345369386.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345369386 = 2 ⋅172684693.

It is a cyclic number.

It is not a de Polignac number, because 683963543 - 2⁶ = 683963479 is a prime.

It is a super-2 number, since 2×683963543² = 935612256306225698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683963503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1418771 + ... + 1419252.

It is an arithmetic number, because the mean of its divisors is an integer number (171700452).

Almost surely, 2^683963543 is an apocalyptic number.

683963543 is a deficient number, since it is larger than the sum of its proper divisors (2838265).

683963543 is a wasteful number, since it uses less digits than its factorization.

683963543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838264.

The product of its digits is 1399680, while the sum is 47.

The square root of 683963543 is about 26152.6966678391. The cubic root of 683963543 is about 881.0711573231.

The spelling of 683963543 in words is "six hundred eighty-three million, nine hundred sixty-three thousand, five hundred forty-three".