1685695628 has 6 divisors (see below), whose sum is σ = 2949967356. Its totient is φ = 842847812.

The previous prime is 1685695621. The next prime is 1685695651. The reversal of 1685695628 is 8265965861.

It is not an unprimeable number, because it can be changed into a prime (1685695621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210711950 + ... + 210711957.

It is an arithmetic number, because the mean of its divisors is an integer number (491661226).

Almost surely, 2^1685695628 is an apocalyptic number.

It is an amenable number.

1685695628 is a deficient number, since it is larger than the sum of its proper divisors (1264271728).

1685695628 is a wasteful number, since it uses less digits than its factorization.

1685695628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421423911 (or 421423909 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 56.

The square root of 1685695628 is about 41057.2238223677. The cubic root of 1685695628 is about 1190.1263025323.

The spelling of 1685695628 in words is "one billion, six hundred eighty-five million, six hundred ninety-five thousand, six hundred twenty-eight".