669892636800 has 1536 divisors, whose sum is σ = 2725138080000. Its totient is φ = 160048742400.

The previous prime is 669892636793. The next prime is 669892636811. The reversal of 669892636800 is 8636298966.

It is a super-2 number, since 2×669892636800² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2490307066 + ... + 2490307334.

Almost surely, 2^669892636800 is an apocalyptic number.

669892636800 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 669892636800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1362569040000).

669892636800 is an abundant number, since it is smaller than the sum of its proper divisors (2055245443200).

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

669892636800 is a wasteful number, since it uses less digits than its factorization.

669892636800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 63.

The spelling of 669892636800 in words is "six hundred sixty-nine billion, eight hundred ninety-two million, six hundred thirty-six thousand, eight hundred".