77068344 has 64 divisors (see below), whose sum is σ = 208396800. Its totient is φ = 23657984.

The previous prime is 77068333. The next prime is 77068357. The reversal of 77068344 is 44386077.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17167 + ... + 21185.

It is an arithmetic number, because the mean of its divisors is an integer number (3256200).

Almost surely, 2^77068344 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 77068344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104198400).

77068344 is an abundant number, since it is smaller than the sum of its proper divisors (131328456).

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

77068344 is a wasteful number, since it uses less digits than its factorization.

77068344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092 (or 4088 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 77068344 is about 8778.8577844729. The cubic root of 77068344 is about 425.5579182534.

The spelling of 77068344 in words is "seventy-seven million, sixty-eight thousand, three hundred forty-four".