2972666 has 4 divisors (see below), whose sum is σ = 4459002. Its totient is φ = 1486332.

The previous prime is 2972663. The next prime is 2972687. The reversal of 2972666 is 6662792.

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

It can be written as a sum of positive squares in only one way, i.e., 1615441 + 1357225 = 1271^2 + 1165^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2972663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 743165 + ... + 743168.

2^2972666 is an apocalyptic number.

2972666 is a deficient number, since it is larger than the sum of its proper divisors (1486336).

2972666 is a wasteful number, since it uses less digits than its factorization.

2972666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486335.

The product of its digits is 54432, while the sum is 38.

The square root of 2972666 is about 1724.1421055122. The cubic root of 2972666 is about 143.7855926988.

It can be divided in two parts, 29726 and 66, that added together give a palindrome (29792).

The spelling of 2972666 in words is "two million, nine hundred seventy-two thousand, six hundred sixty-six".