77740764 has 48 divisors (see below), whose sum is σ = 189235200. Its totient is φ = 24808896.

The previous prime is 77740757. The next prime is 77740783. The reversal of 77740764 is 46704777.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43317 + ... + 45075.

It is an arithmetic number, because the mean of its divisors is an integer number (3942400).

Almost surely, 2^77740764 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 77740764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94617600).

77740764 is an abundant number, since it is smaller than the sum of its proper divisors (111494436).

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

77740764 is a wasteful number, since it uses less digits than its factorization.

77740764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922 (or 1920 counting only the distinct ones).

The product of its (nonzero) digits is 230496, while the sum is 42.

The square root of 77740764 is about 8817.0723032081. The cubic root of 77740764 is about 426.7919979574.

The spelling of 77740764 in words is "seventy-seven million, seven hundred forty thousand, seven hundred sixty-four".