694656967680 has 1408 divisors, whose sum is σ = 2826880143360. Its totient is φ = 160526499840.

The previous prime is 694656967591. The next prime is 694656967721. The reversal of 694656967680 is 86769656496.

It is a happy number.

694656967680 is a `hidden beast` number, since 6 + 9 + 465 + 6 + 96 + 76 + 8 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 694656967599 and 694656967608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2061296472 + ... + 2061296808.

Almost surely, 2^694656967680 is an apocalyptic number.

694656967680 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 694656967680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1413440071680).

694656967680 is an abundant number, since it is smaller than the sum of its proper divisors (2132223175680).

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

694656967680 is a wasteful number, since it uses less digits than its factorization.

694656967680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 705438720, while the sum is 72.

The spelling of 694656967680 in words is "six hundred ninety-four billion, six hundred fifty-six million, nine hundred sixty-seven thousand, six hundred eighty".