685021346 has 8 divisors (see below), whose sum is σ = 1027644060. Its totient is φ = 342473328.

The previous prime is 685021321. The next prime is 685021349. The reversal of 685021346 is 643120586.

It can be written as a sum of positive squares in 2 ways, for example, as 616777225 + 68244121 = 24835^2 + 8261^2 .

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

It is not an unprimeable number, because it can be changed into a prime (685021349) 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, 21800 + ... + 42956.

Almost surely, 2^685021346 is an apocalyptic number.

685021346 is a deficient number, since it is larger than the sum of its proper divisors (342622714).

685021346 is a wasteful number, since it uses less digits than its factorization.

685021346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37348.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 685021346 is about 26172.9124477961. The cubic root of 685021346 is about 881.5251384674.

The spelling of 685021346 in words is "six hundred eighty-five million, twenty-one thousand, three hundred forty-six".