669546387773 has 8 divisors (see below), whose sum is σ = 705606160800. Its totient is φ = 633568663728.

The previous prime is 669546387691. The next prime is 669546387779. The reversal of 669546387773 is 377783645966.

669546387773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 669546387773 - 2³⁶ = 600826911037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 669546387697 and 669546387706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669546387779) 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, 20495486 + ... + 20528127.

It is an arithmetic number, because the mean of its divisors is an integer number (88200770100).

Almost surely, 2^669546387773 is an apocalyptic number.

It is an amenable number.

669546387773 is a deficient number, since it is larger than the sum of its proper divisors (36059773027).

669546387773 is a wasteful number, since it uses less digits than its factorization.

669546387773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41024491.

The product of its digits is 960180480, while the sum is 71.

The spelling of 669546387773 in words is "six hundred sixty-nine billion, five hundred forty-six million, three hundred eighty-seven thousand, seven hundred seventy-three".