2660331 has 4 divisors (see below), whose sum is σ = 3547112. Its totient is φ = 1773552.

The previous prime is 2660311. The next prime is 2660351. The reversal of 2660331 is 1330662.

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

It is an interprime number because it is at equal distance from previous prime (2660311) and next prime (2660351).

It is not a de Polignac number, because 2660331 - 2¹⁴ = 2643947 is a prime.

It is a super-2 number, since 2×2660331² = 14154722059122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2660298 and 2660307.

It is not an unprimeable number, because it can be changed into a prime (2660311) 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, 443386 + ... + 443391.

It is an arithmetic number, because the mean of its divisors is an integer number (886778).

2^2660331 is an apocalyptic number.

2660331 is a deficient number, since it is larger than the sum of its proper divisors (886781).

2660331 is an equidigital number, since it uses as much as digits as its factorization.

2660331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886780.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 2660331 is about 1631.0521144341. The cubic root of 2660331 is about 138.5623451323.

Adding to 2660331 its reverse (1330662), we get a palindrome (3990993).

The spelling of 2660331 in words is "two million, six hundred sixty thousand, three hundred thirty-one".