1064600665920 has 168 divisors, whose sum is σ = 3994672163040. Its totient is φ = 258085002240.

The previous prime is 1064600665907. The next prime is 1064600665937. The reversal of 1064600665920 is 295660064601.

1064600665920 is a `hidden beast` number, since 10 + 6 + 4 + 600 + 6 + 6 + 5 + 9 + 20 = 666.

It is a super-2 number, since 2×1064600665920² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16770730 + ... + 16834089.

Almost surely, 2^{1064600665920} is an apocalyptic number.

1064600665920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1064600665920 is an abundant number, since it is smaller than the sum of its proper divisors (2930071497120).

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

1064600665920 is a wasteful number, since it uses less digits than its factorization.

1064600665920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33604853 (or 33604840 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 1064600665920 in words is "one trillion, sixty-four billion, six hundred million, six hundred sixty-five thousand, nine hundred twenty".