77168 has 40 divisors (see below), whose sum is σ = 187488. Its totient is φ = 29952.
The previous prime is 77167. The next prime is 77171. The reversal of 77168 is 86177.
It is a self number, because there is not a number n which added to its sum of digits gives 77168.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (77167) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1430 + ... + 1482.
277168 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 77168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93744).
77168 is an abundant number, since it is smaller than the sum of its proper divisors (110320).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
77168 is a wasteful number, since it uses less digits than its factorization.
77168 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 81 (or 75 counting only the distinct ones).
The product of its digits is 2352, while the sum is 29.
The square root of 77168 is about 277.7912885603. The cubic root of 77168 is about 42.5741266916.
Subtracting 77168 from its reverse (86177), we obtain a palindrome (9009).
It can be divided in two parts, 7 and 7168, that multiplied together give a square (50176 = 2242).
The spelling of 77168 in words is "seventy-seven thousand, one hundred sixty-eight".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.074 sec. • engine limits •