1466662561 has 12 divisors (see below), whose sum is σ = 1837358292. Its totient is φ = 1160435808.

The previous prime is 1466662517. The next prime is 1466662591. The reversal of 1466662561 is 1652666641.

It can be written as a sum of positive squares in 2 ways, for example, as 100620961 + 1366041600 = 10031^2 + 36960^2 .

It is not a de Polignac number, because 1466662561 - 2⁷ = 1466662433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1466662591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1150590 + ... + 1151863.

It is an arithmetic number, because the mean of its divisors is an integer number (153113191).

Almost surely, 2^1466662561 is an apocalyptic number.

It is an amenable number.

1466662561 is a deficient number, since it is larger than the sum of its proper divisors (370695731).

1466662561 is a wasteful number, since it uses less digits than its factorization.

1466662561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302480 (or 2302473 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 1466662561 is about 38297.0307073538. The cubic root of 1466662561 is about 1136.1702204032.

The spelling of 1466662561 in words is "one billion, four hundred sixty-six million, six hundred sixty-two thousand, five hundred sixty-one".