77033340 has 72 divisors (see below), whose sum is σ = 234653328. Its totient is φ = 20455680.

The previous prime is 77033293. The next prime is 77033351. The reversal of 77033340 is 4333077.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 49819 + ... + 51341.

It is an arithmetic number, because the mean of its divisors is an integer number (3259074).

Almost surely, 2^77033340 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 77033340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117326664).

77033340 is an abundant number, since it is smaller than the sum of its proper divisors (157619988).

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

77033340 is a wasteful number, since it uses less digits than its factorization.

77033340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819 (or 1814 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 27.

The square root of 77033340 is about 8776.8639046074. The cubic root of 77033340 is about 425.4934798410.

The spelling of 77033340 in words is "seventy-seven million, thirty-three thousand, three hundred forty".