77332266 has 64 divisors (see below), whose sum is σ = 189475200. Its totient is φ = 23184000.

The previous prime is 77332219. The next prime is 77332267. The reversal of 77332266 is 66223377.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 77332266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77332267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59350 + ... + 60638.

It is an arithmetic number, because the mean of its divisors is an integer number (2960550).

Almost surely, 2^77332266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77332266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94737600).

77332266 is an abundant number, since it is smaller than the sum of its proper divisors (112142934).

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

77332266 is a wasteful number, since it uses less digits than its factorization.

77332266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412 (or 1406 counting only the distinct ones).

The product of its digits is 63504, while the sum is 36.

The square root of 77332266 is about 8793.8766195575. The cubic root of 77332266 is about 426.0431418319.

Subtracting from 77332266 its reverse (66223377), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 7733 and 2266, that added together give a palindrome (9999).

The spelling of 77332266 in words is "seventy-seven million, three hundred thirty-two thousand, two hundred sixty-six".