1680364 has 12 divisors (see below), whose sum is σ = 3360784. Its totient is φ = 720144.

The previous prime is 1680361. The next prime is 1680373. The reversal of 1680364 is 4630861.

1680364 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 60013 = 1680364 / (1 + 6 + 8 + 0 + 3 + 6 + 4).

It is a d-powerful number, because it can be written as 1 + 6 + 8 + 0 + 3⁶ + 6⁸ + 4 .

It is not an unprimeable number, because it can be changed into a prime (1680361) 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, 29979 + ... + 30034.

2^1680364 is an apocalyptic number.

1680364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1680364 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1680364 is a wasteful number, since it uses less digits than its factorization.

1680364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60024 (or 60022 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1680364 is about 1296.2885481250. The cubic root of 1680364 is about 118.8870241003.

The spelling of 1680364 in words is "one million, six hundred eighty thousand, three hundred sixty-four".