2997220666 has 32 divisors (see below), whose sum is σ = 5418845568. Its totient is φ = 1226480640.

The previous prime is 2997220637. The next prime is 2997220687. The reversal of 2997220666 is 6660227992.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165615 + ... + 182818.

It is an arithmetic number, because the mean of its divisors is an integer number (169338924).

Almost surely, 2^2997220666 is an apocalyptic number.

2997220666 is a deficient number, since it is larger than the sum of its proper divisors (2421624902).

2997220666 is a wasteful number, since it uses less digits than its factorization.

2997220666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348486.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 2997220666 is about 54746.8781393058. The cubic root of 2997220666 is about 1441.8040445533.

The spelling of 2997220666 in words is "two billion, nine hundred ninety-seven million, two hundred twenty thousand, six hundred sixty-six".