1680501 has 16 divisors (see below), whose sum is σ = 2407104. Its totient is φ = 1039104.

The previous prime is 1680491. The next prime is 1680509. The reversal of 1680501 is 1050861.

It is not a de Polignac number, because 1680501 - 2⁷ = 1680373 is a prime.

It is a super-2 number, since 2×1680501² = 5648167222002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4035 + ... + 4431.

It is an arithmetic number, because the mean of its divisors is an integer number (150444).

2^1680501 is an apocalyptic number.

It is an amenable number.

1680501 is a deficient number, since it is larger than the sum of its proper divisors (726603).

1680501 is a wasteful number, since it uses less digits than its factorization.

1680501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1680501 is about 1296.3413902210. The cubic root of 1680501 is about 118.8902549637.

The spelling of 1680501 in words is "one million, six hundred eighty thousand, five hundred one".