2180654 has 16 divisors (see below), whose sum is σ = 3775200. Its totient is φ = 925344.

The previous prime is 2180627. The next prime is 2180677. The reversal of 2180654 is 4560812.

It is an Ulam number.

2180654 is a modest number, since divided by 654 gives 218 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 812 + ... + 2240.

It is an arithmetic number, because the mean of its divisors is an integer number (235950).

2^2180654 is an apocalyptic number.

2180654 is a deficient number, since it is larger than the sum of its proper divisors (1594546).

2180654 is a wasteful number, since it uses less digits than its factorization.

2180654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 2180654 is about 1476.7037617613. The cubic root of 2180654 is about 129.6767907836.

The spelling of 2180654 in words is "two million, one hundred eighty thousand, six hundred fifty-four".