676539694656 has 336 divisors, whose sum is σ = 2325421612800. Its totient is φ = 192311110656.

The previous prime is 676539694651. The next prime is 676539694729. The reversal of 676539694656 is 656496935676.

676539694656 is a `hidden beast` number, since 6 + 76 + 5 + 3 + 96 + 9 + 465 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (676539694651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16660105 + ... + 16700663.

Almost surely, 2^676539694656 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 676539694656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1162710806400).

676539694656 is an abundant number, since it is smaller than the sum of its proper divisors (1648881918144).

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

676539694656 is a wasteful number, since it uses less digits than its factorization.

676539694656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40791 (or 40768 counting only the distinct ones).

The product of its digits is 1322697600, while the sum is 72.

The spelling of 676539694656 in words is "six hundred seventy-six billion, five hundred thirty-nine million, six hundred ninety-four thousand, six hundred fifty-six".