1685372 has 12 divisors (see below), whose sum is σ = 3176376. Its totient is φ = 777840.

The previous prime is 1685323. The next prime is 1685381. The reversal of 1685372 is 2735861.

It is a happy number.

It is a d-powerful number, because it can be written as 1 + 6⁸ + 8⁴ + 5⁴ + 3 + 7 + 2¹⁰ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16154 + ... + 16257.

It is an arithmetic number, because the mean of its divisors is an integer number (264698).

2^1685372 is an apocalyptic number.

It is an amenable number.

1685372 is a deficient number, since it is larger than the sum of its proper divisors (1491004).

1685372 is a wasteful number, since it uses less digits than its factorization.

1685372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32428 (or 32426 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 1685372 is about 1298.2187797132. The cubic root of 1685372 is about 119.0050135590.

It can be divided in two parts, 168 and 5372, that multiplied together give a triangular number (902496 = T₁₃₄₃).

The spelling of 1685372 in words is "one million, six hundred eighty-five thousand, three hundred seventy-two".