683505861 has 8 divisors (see below), whose sum is σ = 928536480. Its totient is φ = 447072912.

The previous prime is 683505841. The next prime is 683505871. The reversal of 683505861 is 168505386.

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

It is not a de Polignac number, because 683505861 - 2¹³ = 683497669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (683505841) 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, 2149231 + ... + 2149548.

It is an arithmetic number, because the mean of its divisors is an integer number (116067060).

Almost surely, 2^683505861 is an apocalyptic number.

It is an amenable number.

683505861 is a deficient number, since it is larger than the sum of its proper divisors (245030619).

683505861 is a wasteful number, since it uses less digits than its factorization.

683505861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298835.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 683505861 is about 26143.9450160071. The cubic root of 683505861 is about 880.8745872020.

The spelling of 683505861 in words is "six hundred eighty-three million, five hundred five thousand, eight hundred sixty-one".