1455632666 has 4 divisors (see below), whose sum is σ = 2183449002. Its totient is φ = 727816332.

The previous prime is 1455632639. The next prime is 1455632677. The reversal of 1455632666 is 6662365541.

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., 839550625 + 616082041 = 28975^2 + 24821^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363908165 + ... + 363908168.

Almost surely, 2^1455632666 is an apocalyptic number.

1455632666 is a deficient number, since it is larger than the sum of its proper divisors (727816336).

1455632666 is an equidigital number, since it uses as much as digits as its factorization.

1455632666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727816335.

The product of its digits is 777600, while the sum is 44.

The square root of 1455632666 is about 38152.7543697699. The cubic root of 1455632666 is about 1133.3148976432.

The spelling of 1455632666 in words is "one billion, four hundred fifty-five million, six hundred thirty-two thousand, six hundred sixty-six".