690425746457568 has 288 divisors, whose sum is σ = 2046163253087520. Its totient is φ = 203543837798400.

The previous prime is 690425746457501. The next prime is 690425746457641. The reversal of 690425746457568 is 865754647524096.

It is a happy number.

It is a super-2 number, since 2×690425746457568² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 690425746457493 and 690425746457502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4327495878 + ... + 4327655418.

It is an arithmetic number, because the mean of its divisors is an integer number (7104733517665).

Almost surely, 2^{690425746457568} 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 690425746457568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1023081626543760).

690425746457568 is an abundant number, since it is smaller than the sum of its proper divisors (1355737506629952).

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

690425746457568 is a wasteful number, since it uses less digits than its factorization.

690425746457568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169682 (or 169663 counting only the distinct ones).

The product of its (nonzero) digits is 12192768000, while the sum is 78.

The spelling of 690425746457568 in words is "six hundred ninety trillion, four hundred twenty-five billion, seven hundred forty-six million, four hundred fifty-seven thousand, five hundred sixty-eight".