1121664006 has 24 divisors (see below), whose sum is σ = 2433571920. Its totient is φ = 373380336.

The previous prime is 1121663981. The next prime is 1121664007. The reversal of 1121664006 is 6004661211.

1121664006 is a `hidden beast` number, since 1 + 1 + 2 + 16 + 640 + 0 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121664007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28561 + ... + 55308.

It is an arithmetic number, because the mean of its divisors is an integer number (101398830).

Almost surely, 2^1121664006 is an apocalyptic number.

1121664006 is an abundant number, since it is smaller than the sum of its proper divisors (1311907914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121664006 is a wasteful number, since it uses less digits than its factorization.

1121664006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84620 (or 84617 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1121664006 is about 33491.2526788712. The cubic root of 1121664006 is about 1039.0128719076.

The spelling of 1121664006 in words is "one billion, one hundred twenty-one million, six hundred sixty-four thousand, six".