1522772666 has 8 divisors (see below), whose sum is σ = 2345893140. Its totient is φ = 740808288.

The previous prime is 1522772663. The next prime is 1522772683. The reversal of 1522772666 is 6662772251.

It can be written as a sum of positive squares in 2 ways, for example, as 1506604225 + 16168441 = 38815^2 + 4021^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1522772663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10288931 + ... + 10289078.

Almost surely, 2^1522772666 is an apocalyptic number.

1522772666 is a deficient number, since it is larger than the sum of its proper divisors (823120474).

1522772666 is a wasteful number, since it uses less digits than its factorization.

1522772666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20578048.

The product of its digits is 423360, while the sum is 44.

The square root of 1522772666 is about 39022.7198693274. The cubic root of 1522772666 is about 1150.4781039138.

The spelling of 1522772666 in words is "one billion, five hundred twenty-two million, seven hundred seventy-two thousand, six hundred sixty-six".