669112788 has 24 divisors (see below), whose sum is σ = 1567490400. Its totient is φ = 222148000.

The previous prime is 669112783. The next prime is 669112789. The reversal of 669112788 is 887211966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669112781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108063 + ... + 114086.

It is an arithmetic number, because the mean of its divisors is an integer number (65312100).

Almost surely, 2^669112788 is an apocalyptic number.

It is an amenable number.

669112788 is an abundant number, since it is smaller than the sum of its proper divisors (898377612).

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

669112788 is a wasteful number, since it uses less digits than its factorization.

669112788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222407 (or 222405 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The square root of 669112788 is about 25867.2145388714. The cubic root of 669112788 is about 874.6476025299.

The spelling of 669112788 in words is "six hundred sixty-nine million, one hundred twelve thousand, seven hundred eighty-eight".