1680498 has 24 divisors (see below), whose sum is σ = 3685500. Its totient is φ = 553344.

The previous prime is 1680491. The next prime is 1680509. The reversal of 1680498 is 8940861.

It is a happy number.

1680498 is a `hidden beast` number, since 168 + 0 + 498 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1671849 + 8649 = 1293^2 + 93^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1680491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1078 + ... + 2126.

2^1680498 is an apocalyptic number.

1680498 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1680498 is an abundant number, since it is smaller than the sum of its proper divisors (2005002).

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

1680498 is a wasteful number, since it uses less digits than its factorization.

1680498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146 (or 1143 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1680498 is about 1296.3402331178. The cubic root of 1680498 is about 118.8901842168.

The spelling of 1680498 in words is "one million, six hundred eighty thousand, four hundred ninety-eight".