3234561666 has 16 divisors (see below), whose sum is σ = 7393283904. Its totient is φ = 924160464.

The previous prime is 3234561647. The next prime is 3234561677. The reversal of 3234561666 is 6661654323.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 77013373 = 3234561666 / (3 + 2 + 3 + 4 + 5 + 6 + 1 + 6 + 6 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38506645 + ... + 38506728.

It is an arithmetic number, because the mean of its divisors is an integer number (462080244).

Almost surely, 2^3234561666 is an apocalyptic number.

3234561666 is an abundant number, since it is smaller than the sum of its proper divisors (4158722238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3234561666 is a wasteful number, since it uses less digits than its factorization.

3234561666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77013385.

The product of its digits is 466560, while the sum is 42.

The square root of 3234561666 is about 56873.2069255814. The cubic root of 3234561666 is about 1478.8988744727.

The spelling of 3234561666 in words is "three billion, two hundred thirty-four million, five hundred sixty-one thousand, six hundred sixty-six".