685252053 has 12 divisors (see below), whose sum is σ = 990095808. Its totient is φ = 456702120.

The previous prime is 685252033. The next prime is 685252079. The reversal of 685252053 is 350252586.

It is a happy number.

685252053 is a `hidden beast` number, since 6 + 85 + 2 + 520 + 53 = 666.

685252053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 685252053 - 2⁸ = 685251797 is a prime.

It is a super-2 number, since 2×685252053² = 939140752281429618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 685251999 and 685252017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685252003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29526 + ... + 47352.

It is an arithmetic number, because the mean of its divisors is an integer number (82507984).

Almost surely, 2^685252053 is an apocalyptic number.

It is an amenable number.

685252053 is a deficient number, since it is larger than the sum of its proper divisors (304843755).

685252053 is a wasteful number, since it uses less digits than its factorization.

685252053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22104 (or 22101 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 685252053 is about 26177.3194387814. The cubic root of 685252053 is about 881.6240897357.

The spelling of 685252053 in words is "six hundred eighty-five million, two hundred fifty-two thousand, fifty-three".