2921966 has 8 divisors (see below), whose sum is σ = 4573584. Its totient is φ = 1397440.

The previous prime is 2921957. The next prime is 2921981. The reversal of 2921966 is 6691292.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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, 31715 + ... + 31806.

It is an arithmetic number, because the mean of its divisors is an integer number (571698).

2^2921966 is an apocalyptic number.

2921966 is a deficient number, since it is larger than the sum of its proper divisors (1651618).

2921966 is a wasteful number, since it uses less digits than its factorization.

2921966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63546.

The product of its digits is 11664, while the sum is 35.

The square root of 2921966 is about 1709.3759095062. The cubic root of 2921966 is about 142.9634607607.

The spelling of 2921966 in words is "two million, nine hundred twenty-one thousand, nine hundred sixty-six".