669688075200 has 336 divisors, whose sum is σ = 2324818027520. Its totient is φ = 168303329280.

The previous prime is 669688075153. The next prime is 669688075211. The reversal of 669688075200 is 2570886966.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17582577 + ... + 17620623.

Almost surely, 2^669688075200 is an apocalyptic number.

669688075200 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 669688075200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1162409013760).

669688075200 is an abundant number, since it is smaller than the sum of its proper divisors (1655129952320).

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

669688075200 is a wasteful number, since it uses less digits than its factorization.

669688075200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38284 (or 38269 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 669688075200 in words is "six hundred sixty-nine billion, six hundred eighty-eight million, seventy-five thousand, two hundred".