675934643664 has 1120 divisors, whose sum is σ = 2563077095424. Its totient is φ = 168006389760.

The previous prime is 675934643639. The next prime is 675934643677. The reversal of 675934643664 is 466346439576.

It is a happy number.

675934643664 is a `hidden beast` number, since 6 + 7 + 593 + 4 + 6 + 4 + 36 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 989655067 + ... + 989655749.

Almost surely, 2^675934643664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 675934643664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1281538547712).

675934643664 is an abundant number, since it is smaller than the sum of its proper divisors (1887142451760).

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

675934643664 is a wasteful number, since it uses less digits than its factorization.

675934643664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787 (or 766 counting only the distinct ones).

The product of its digits is 235146240, while the sum is 63.

The spelling of 675934643664 in words is "six hundred seventy-five billion, nine hundred thirty-four million, six hundred forty-three thousand, six hundred sixty-four".