1663287106 has 16 divisors (see below), whose sum is σ = 2844899064. Its totient is φ = 722513664.

The previous prime is 1663287103. The next prime is 1663287107. The reversal of 1663287106 is 6017823661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 973752025 + 689535081 = 31205^2 + 26259^2 .

It is not an unprimeable number, because it can be changed into a prime (1663287103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1881105 + ... + 1881988.

Almost surely, 2^1663287106 is an apocalyptic number.

1663287106 is a deficient number, since it is larger than the sum of its proper divisors (1181611958).

1663287106 is a wasteful number, since it uses less digits than its factorization.

1663287106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3763125.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1663287106 is about 40783.4170466380. The cubic root of 1663287106 is about 1184.8291767744.

The spelling of 1663287106 in words is "one billion, six hundred sixty-three million, two hundred eighty-seven thousand, one hundred six".