683953 has 4 divisors (see below), whose sum is σ = 706048. Its totient is φ = 661860.

The previous prime is 683939. The next prime is 683957. The reversal of 683953 is 359386.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 359386 = 2 ⋅179693.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-683953 is a prime.

It is an Ulam number.

It is a Duffinian number.

683953 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (683957) 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, 11001 + ... + 11062.

It is an arithmetic number, because the mean of its divisors is an integer number (176512).

2⁶⁸³⁹⁵³ is an apocalyptic number.

It is an amenable number.

683953 is a deficient number, since it is larger than the sum of its proper divisors (22095).

683953 is a wasteful number, since it uses less digits than its factorization.

683953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22094.

The product of its digits is 19440, while the sum is 34.

The square root of 683953 is about 827.0145101508. The cubic root of 683953 is about 88.1066630191.

The spelling of 683953 in words is "six hundred eighty-three thousand, nine hundred fifty-three".