2061618 has 16 divisors (see below), whose sum is σ = 4440576. Its totient is φ = 634320.

The previous prime is 2061613. The next prime is 2061623. The reversal of 2061618 is 8161602.

It is an interprime number because it is at equal distance from previous prime (2061613) and next prime (2061623).

It is not an unprimeable number, because it can be changed into a prime (2061613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13138 + ... + 13293.

It is an arithmetic number, because the mean of its divisors is an integer number (277536).

2^2061618 is an apocalyptic number.

2061618 is an abundant number, since it is smaller than the sum of its proper divisors (2378958).

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

2061618 is a wasteful number, since it uses less digits than its factorization.

2061618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26449.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2061618 is about 1435.8335558135. The cubic root of 2061618 is about 127.2729368890.

The spelling of 2061618 in words is "two million, sixty-one thousand, six hundred eighteen".