526685 has 4 divisors (see below), whose sum is σ = 632028. Its totient is φ = 421344.

The previous prime is 526681. The next prime is 526703. The reversal of 526685 is 586625.

526685 = 418² + 419² + 420².

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 395641 + 131044 = 629^2 + 362^2 .

It is a cyclic number.

It is not a de Polignac number, because 526685 - 2² = 526681 is a prime.

It is a super-4 number, since 4×526685⁴ (a number of 24 digits) contains 4444 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 (526681) 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, 52664 + ... + 52673.

It is an arithmetic number, because the mean of its divisors is an integer number (158007).

2⁵²⁶⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

526685 is a deficient number, since it is larger than the sum of its proper divisors (105343).

526685 is a wasteful number, since it uses less digits than its factorization.

526685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105342.

The product of its digits is 14400, while the sum is 32.

The square root of 526685 is about 725.7306662943. The cubic root of 526685 is about 80.7576457598.

The spelling of 526685 in words is "five hundred twenty-six thousand, six hundred eighty-five".