694784609064 has 576 divisors, whose sum is σ = 2473546682880. Its totient is φ = 174400128000.

The previous prime is 694784609053. The next prime is 694784609069. The reversal of 694784609064 is 460906487496.

694784609064 is a `hidden beast` number, since 69 + 478 + 46 + 0 + 9 + 0 + 64 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 694784608992 and 694784609010.

It is not an unprimeable number, because it can be changed into a prime (694784609069) by changing a digit.

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 143 ways as a sum of consecutive naturals, for example, 86724819 + ... + 86732829.

It is an arithmetic number, because the mean of its divisors is an integer number (4294351880).

Almost surely, 2^694784609064 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 694784609064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236773341440).

694784609064 is an abundant number, since it is smaller than the sum of its proper divisors (1778762073816).

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

694784609064 is a wasteful number, since it uses less digits than its factorization.

694784609064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8142 (or 8128 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 63.

The spelling of 694784609064 in words is "six hundred ninety-four billion, seven hundred eighty-four million, six hundred nine thousand, sixty-four".