685054 has 4 divisors (see below), whose sum is σ = 1027584. Its totient is φ = 342526.

The previous prime is 685051. The next prime is 685057. The reversal of 685054 is 450586.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (685051) and next prime (685057).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171262 + ... + 171265.

It is an arithmetic number, because the mean of its divisors is an integer number (256896).

2⁶⁸⁵⁰⁵⁴ is an apocalyptic number.

685054 is a deficient number, since it is larger than the sum of its proper divisors (342530).

685054 is a wasteful number, since it uses less digits than its factorization.

685054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342529.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 685054 is about 827.6798898125. The cubic root of 685054 is about 88.1539145264.

The spelling of 685054 in words is "six hundred eighty-five thousand, fifty-four".