77886068 has 12 divisors (see below), whose sum is σ = 146785380. Its totient is φ = 35947392.

The previous prime is 77886047. The next prime is 77886071. The reversal of 77886068 is 86068877.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48052624 + 29833444 = 6932^2 + 5462^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748853 + ... + 748956.

It is an arithmetic number, because the mean of its divisors is an integer number (12232115).

Almost surely, 2^77886068 is an apocalyptic number.

It is an amenable number.

77886068 is a deficient number, since it is larger than the sum of its proper divisors (68899312).

77886068 is a wasteful number, since it uses less digits than its factorization.

77886068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497826 (or 1497824 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 50.

The square root of 77886068 is about 8825.3083798811. The cubic root of 77886068 is about 427.0577357957.

The spelling of 77886068 in words is "seventy-seven million, eight hundred eighty-six thousand, sixty-eight".