685954 has 8 divisors (see below), whose sum is σ = 1034748. Its totient is φ = 341040.

The previous prime is 685939. The next prime is 685963. The reversal of 685954 is 459586.

685954 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 683929 + 2025 = 827^2 + 45^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477 + ... + 1264.

2⁶⁸⁵⁹⁵⁴ is an apocalyptic number.

685954 is a deficient number, since it is larger than the sum of its proper divisors (348794).

685954 is a wasteful number, since it uses less digits than its factorization.

685954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940.

The product of its digits is 43200, while the sum is 37.

The square root of 685954 is about 828.2233998143. The cubic root of 685954 is about 88.1925021435.

The spelling of 685954 in words is "six hundred eighty-five thousand, nine hundred fifty-four".