2631966 has 8 divisors (see below), whose sum is σ = 5263944. Its totient is φ = 877320.

The previous prime is 2631949. The next prime is 2631971. The reversal of 2631966 is 6691362.

It is a happy number.

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

2631966 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent 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, 219325 + ... + 219336.

It is an arithmetic number, because the mean of its divisors is an integer number (657993).

2^2631966 is an apocalyptic number.

2631966 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.

2631966 is a wasteful number, since it uses less digits than its factorization.

2631966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438666.

The product of its digits is 11664, while the sum is 33.

The square root of 2631966 is about 1622.3335045545. Note that the first 3 decimals coincide. The cubic root of 2631966 is about 138.0681243146.

The spelling of 2631966 in words is "two million, six hundred thirty-one thousand, nine hundred sixty-six".