77160380 has 24 divisors (see below), whose sum is σ = 176767920. Its totient is φ = 28058240.

The previous prime is 77160353. The next prime is 77160389. The reversal of 77160380 is 8306177.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77160389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175145 + ... + 175584.

It is an arithmetic number, because the mean of its divisors is an integer number (7365330).

Almost surely, 2^77160380 is an apocalyptic number.

It is an amenable number.

77160380 is an abundant number, since it is smaller than the sum of its proper divisors (99607540).

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

77160380 is a wasteful number, since it uses less digits than its factorization.

77160380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350749 (or 350747 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 77160380 is about 8784.0981324209. The cubic root of 77160380 is about 425.7272530964.

The spelling of 77160380 in words is "seventy-seven million, one hundred sixty thousand, three hundred eighty".