68776890 has 192 divisors, whose sum is σ = 213736320. Its totient is φ = 14031360.

The previous prime is 68776889. The next prime is 68776891. The reversal of 68776890 is 9867786.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68776889) and next prime (68776891).

It is not an unprimeable number, because it can be changed into a prime (68776891) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1127460 + ... + 1127520.

It is an arithmetic number, because the mean of its divisors is an integer number (1113210).

Almost surely, 2^68776890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68776890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106868160).

68776890 is an abundant number, since it is smaller than the sum of its proper divisors (144959430).

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

68776890 is a wasteful number, since it uses less digits than its factorization.

68776890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The square root of 68776890 is about 8293.1833453747. The cubic root of 68776890 is about 409.7140381542.

It can be divided in two parts, 687 and 76890, that added together give a palindrome (77577).

The spelling of 68776890 in words is "sixty-eight million, seven hundred seventy-six thousand, eight hundred ninety".