669747403080 has 768 divisors, whose sum is σ = 2685503808000. Its totient is φ = 141368426496.

The previous prime is 669747403069. The next prime is 669747403133. The reversal of 669747403080 is 80304747966.

It is a happy number.

669747403080 is a `hidden beast` number, since 6 + 6 + 97 + 474 + 0 + 3 + 0 + 80 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 311075284 + ... + 311077436.

It is an arithmetic number, because the mean of its divisors is an integer number (3496749750).

Almost surely, 2^669747403080 is an apocalyptic number.

669747403080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669747403080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1342751904000).

669747403080 is an abundant number, since it is smaller than the sum of its proper divisors (2015756404920).

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

669747403080 is a wasteful number, since it uses less digits than its factorization.

669747403080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358 (or 2351 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 669747403080 in words is "six hundred sixty-nine billion, seven hundred forty-seven million, four hundred three thousand, eighty".