77065308 has 36 divisors (see below), whose sum is σ = 195074880. Its totient is φ = 25652736.

The previous prime is 77065291. The next prime is 77065309. The reversal of 77065308 is 80356077.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77065309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42933 + ... + 44691.

Almost surely, 2^77065308 is an apocalyptic number.

It is an amenable number.

77065308 is an abundant number, since it is smaller than the sum of its proper divisors (118009572).

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

77065308 is a wasteful number, since it uses less digits than its factorization.

77065308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986 (or 2981 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 77065308 is about 8778.6848673363. The cubic root of 77065308 is about 425.5523300930.

The spelling of 77065308 in words is "seventy-seven million, sixty-five thousand, three hundred eight".