669192072 has 32 divisors (see below), whose sum is σ = 1678276800. Its totient is φ = 222357824.

The previous prime is 669192067. The next prime is 669192079. The reversal of 669192072 is 270291966.

669192072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (669192079) 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, 36372 + ... + 51587.

It is an arithmetic number, because the mean of its divisors is an integer number (52446150).

Almost surely, 2^669192072 is an apocalyptic number.

It is an amenable number.

669192072 is an abundant number, since it is smaller than the sum of its proper divisors (1009084728).

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

669192072 is a wasteful number, since it uses less digits than its factorization.

669192072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88285 (or 88281 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 669192072 is about 25868.7470125632. The cubic root of 669192072 is about 874.6821471901.

The spelling of 669192072 in words is "six hundred sixty-nine million, one hundred ninety-two thousand, seventy-two".