77276576 has 36 divisors (see below), whose sum is σ = 164222226. Its totient is φ = 35583360.

The previous prime is 77276539. The next prime is 77276581. The reversal of 77276576 is 67567277.

It can be written as a sum of positive squares in only one way, i.e., 74304400 + 2972176 = 8620^2 + 1724^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77276576.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 179081 + ... + 179511.

Almost surely, 2^77276576 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 77276576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82111113).

77276576 is an abundant number, since it is smaller than the sum of its proper divisors (86945650).

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

77276576 is an equidigital number, since it uses as much as digits as its factorization.

77276576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885 (or 446 counting only the distinct ones).

The product of its digits is 864360, while the sum is 47.

The square root of 77276576 is about 8790.7096414340. The cubic root of 77276576 is about 425.9408471431.

The spelling of 77276576 in words is "seventy-seven million, two hundred seventy-six thousand, five hundred seventy-six".