2081658 has 8 divisors (see below), whose sum is σ = 4163328. Its totient is φ = 693884.

The previous prime is 2081647. The next prime is 2081671. The reversal of 2081658 is 8561802.

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

2081658 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173466 + ... + 173477.

It is an arithmetic number, because the mean of its divisors is an integer number (520416).

2^2081658 is an apocalyptic number.

2081658 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.

2081658 is a wasteful number, since it uses less digits than its factorization.

2081658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346948.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 2081658 is about 1442.7952037625. The cubic root of 2081658 is about 127.6839942517.

The spelling of 2081658 in words is "two million, eighty-one thousand, six hundred fifty-eight".