685284061 has 12 divisors (see below), whose sum is σ = 869637600. Its totient is φ = 533987160.

The previous prime is 685284037. The next prime is 685284073. The reversal of 685284061 is 160482586.

It is not a de Polignac number, because 685284061 - 2²⁷ = 551066333 is a prime.

It is a super-2 number, since 2×685284061² = 939228488521303442, which contains 22 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 (685284031) 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, 635161 + ... + 636238.

It is an arithmetic number, because the mean of its divisors is an integer number (72469800).

Almost surely, 2^685284061 is an apocalyptic number.

It is an amenable number.

685284061 is a deficient number, since it is larger than the sum of its proper divisors (184353539).

685284061 is a wasteful number, since it uses less digits than its factorization.

685284061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271424 (or 1271417 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 685284061 is about 26177.9308005809. The cubic root of 685284061 is about 881.6378163562.

The spelling of 685284061 in words is "six hundred eighty-five million, two hundred eighty-four thousand, sixty-one".