1680774 has 8 divisors (see below), whose sum is σ = 3361560. Its totient is φ = 560256.

The previous prime is 1680761. The next prime is 1680779. The reversal of 1680774 is 4770861.

It is a sphenic number, since it is the product of 3 distinct primes.

1680774 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680779) 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, 140059 + ... + 140070.

It is an arithmetic number, because the mean of its divisors is an integer number (420195).

2^1680774 is an apocalyptic number.

1680774 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.

1680774 is a wasteful number, since it uses less digits than its factorization.

1680774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280134.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 1680774 is about 1296.4466822820. The cubic root of 1680774 is about 118.8966925840.

The spelling of 1680774 in words is "one million, six hundred eighty thousand, seven hundred seventy-four".