1680454 has 8 divisors (see below), whose sum is σ = 2530440. Its totient is φ = 836976.

The previous prime is 1680439. The next prime is 1680457. The reversal of 1680454 is 4540861.

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

It is a super-2 number, since 2×1680454² = 5647851292232, which contains 22 as substring.

It is a d-powerful number, because it can be written as 1 + 6⁸ + 8³ + 0 + 4³ + 5 + 4⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680457) 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, 919 + ... + 2050.

It is an arithmetic number, because the mean of its divisors is an integer number (316305).

2^1680454 is an apocalyptic number.

1680454 is a deficient number, since it is larger than the sum of its proper divisors (849986).

1680454 is a wasteful number, since it uses less digits than its factorization.

1680454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1680454 is about 1296.3232621534. The cubic root of 1680454 is about 118.8891465851.

The spelling of 1680454 in words is "one million, six hundred eighty thousand, four hundred fifty-four".