2066719 has 4 divisors (see below), whose sum is σ = 2092960. Its totient is φ = 2040480.

The previous prime is 2066717. The next prime is 2066723. The reversal of 2066719 is 9176602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2066719 - 2¹ = 2066717 is a prime.

It is a super-2 number, since 2×2066719² = 8542654849922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066717) 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 3 ways as a sum of consecutive naturals, for example, 13002 + ... + 13159.

It is an arithmetic number, because the mean of its divisors is an integer number (523240).

2^2066719 is an apocalyptic number.

2066719 is a deficient number, since it is larger than the sum of its proper divisors (26241).

2066719 is an equidigital number, since it uses as much as digits as its factorization.

2066719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26240.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 2066719 is about 1437.6087784930. The cubic root of 2066719 is about 127.3778196458.

The spelling of 2066719 in words is "two million, sixty-six thousand, seven hundred nineteen".