685145348 has 12 divisors (see below), whose sum is σ = 1201938780. Its totient is φ = 341734272.

The previous prime is 685145341. The next prime is 685145371. The reversal of 685145348 is 843541586.

It can be written as a sum of positive squares in 2 ways, for example, as 255744064 + 429401284 = 15992^2 + 20722^2 .

It is a super-2 number, since 2×685145348² = 938848295772082208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 685145299 and 685145308.

It is not an unprimeable number, because it can be changed into a prime (685145341) 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, 207761 + ... + 211032.

It is an arithmetic number, because the mean of its divisors is an integer number (100161565).

Almost surely, 2^685145348 is an apocalyptic number.

It is an amenable number.

685145348 is a deficient number, since it is larger than the sum of its proper divisors (516793432).

685145348 is a wasteful number, since it uses less digits than its factorization.

685145348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419206 (or 419204 counting only the distinct ones).

The product of its digits is 460800, while the sum is 44.

The square root of 685145348 is about 26175.2812401319. The cubic root of 685145348 is about 881.5783262431.

The spelling of 685145348 in words is "six hundred eighty-five million, one hundred forty-five thousand, three hundred forty-eight".