690311559168 has 1440 divisors, whose sum is σ = 2752018869600. Its totient is φ = 168754544640.

The previous prime is 690311559121. The next prime is 690311559181. The reversal of 690311559168 is 861955113096.

690311559168 is a `hidden beast` number, since 6 + 9 + 0 + 31 + 15 + 591 + 6 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 40606562296 + ... + 40606562312.

It is an arithmetic number, because the mean of its divisors is an integer number (1911124215).

Almost surely, 2^690311559168 is an apocalyptic number.

690311559168 is a gapful number since it is divisible by the number (68) 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 690311559168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1376009434800).

690311559168 is an abundant number, since it is smaller than the sum of its proper divisors (2061707310432).

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

690311559168 is an equidigital number, since it uses as much as digits as its factorization.

690311559168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 54.

The spelling of 690311559168 in words is "six hundred ninety billion, three hundred eleven million, five hundred fifty-nine thousand, one hundred sixty-eight".