1631552066 has 8 divisors (see below), whose sum is σ = 2447677440. Its totient is φ = 815659588.

The previous prime is 1631552063. The next prime is 1631552089. The reversal of 1631552066 is 6602551361.

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 (1631552063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39506 + ... + 69453.

It is an arithmetic number, because the mean of its divisors is an integer number (305959680).

Almost surely, 2^1631552066 is an apocalyptic number.

1631552066 is a deficient number, since it is larger than the sum of its proper divisors (816125374).

1631552066 is a wasteful number, since it uses less digits than its factorization.

1631552066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116448.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 1631552066 is about 40392.4753636120. The cubic root of 1631552066 is about 1177.2453377386.

The spelling of 1631552066 in words is "one billion, six hundred thirty-one million, five hundred fifty-two thousand, sixty-six".