1685750396 has 48 divisors (see below), whose sum is σ = 3525107040. Its totient is φ = 696299520.

The previous prime is 1685750393. The next prime is 1685750461. The reversal of 1685750396 is 6930575861.

1685750396 = 9950² + 9951² + ... + 9966².

It is a happy number.

It is a super-3 number, since 3×1685750396³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685750393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17165 + ... + 60548.

It is an arithmetic number, because the mean of its divisors is an integer number (73439730).

Almost surely, 2^1685750396 is an apocalyptic number.

It is an amenable number.

1685750396 is an abundant number, since it is smaller than the sum of its proper divisors (1839356644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1685750396 is a wasteful number, since it uses less digits than its factorization.

1685750396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77774 (or 77772 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 50.

The square root of 1685750396 is about 41057.8907884952. The cubic root of 1685750396 is about 1190.1391914016.

The spelling of 1685750396 in words is "one billion, six hundred eighty-five million, seven hundred fifty thousand, three hundred ninety-six".