77909076 has 72 divisors (see below), whose sum is σ = 232354304. Its totient is φ = 21539520.

The previous prime is 77909071. The next prime is 77909123. The reversal of 77909076 is 67090977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77909071) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2826 + ... + 12798.

Almost surely, 2^77909076 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 77909076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116177152).

77909076 is an abundant number, since it is smaller than the sum of its proper divisors (154445228).

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

77909076 is a wasteful number, since it uses less digits than its factorization.

77909076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10021 (or 10016 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 45.

The square root of 77909076 is about 8826.6118074831. The cubic root of 77909076 is about 427.0997834399.

The spelling of 77909076 in words is "seventy-seven million, nine hundred nine thousand, seventy-six".