669054061 has 16 divisors (see below), whose sum is σ = 753822720. Its totient is φ = 589184640.

The previous prime is 669054053. The next prime is 669054079. The reversal of 669054061 is 160450966.

It is a cyclic number.

It is not a de Polignac number, because 669054061 - 2³ = 669054053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 669054061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669055061) 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 15 ways as a sum of consecutive naturals, for example, 119556 + ... + 125026.

It is an arithmetic number, because the mean of its divisors is an integer number (47113920).

Almost surely, 2^669054061 is an apocalyptic number.

It is an amenable number.

669054061 is a deficient number, since it is larger than the sum of its proper divisors (84768659).

669054061 is a wasteful number, since it uses less digits than its factorization.

669054061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 669054061 is about 25866.0793511502. The cubic root of 669054061 is about 874.6220129564.

The spelling of 669054061 in words is "six hundred sixty-nine million, fifty-four thousand, sixty-one".