2629666 has 8 divisors (see below), whose sum is σ = 4247964. Its totient is φ = 1213680.

The previous prime is 2629661. The next prime is 2629667. The reversal of 2629666 is 6669262.

2629666 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 2 ways, for example, as 2627641 + 2025 = 1621^2 + 45^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2629661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50545 + ... + 50596.

2^2629666 is an apocalyptic number.

2629666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2629666 is a deficient number, since it is larger than the sum of its proper divisors (1618298).

2629666 is a wasteful number, since it uses less digits than its factorization.

2629666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101156.

The product of its digits is 46656, while the sum is 37.

The square root of 2629666 is about 1621.6244941416. The cubic root of 2629666 is about 138.0278946622.

It can be divided in two parts, 26296 and 66, that added together give a palindrome (26362).

The spelling of 2629666 in words is "two million, six hundred twenty-nine thousand, six hundred sixty-six".