77725306 has 8 divisors (see below), whose sum is σ = 117439380. Its totient is φ = 38578848.

The previous prime is 77725283. The next prime is 77725321. The reversal of 77725306 is 60352777.

It can be written as a sum of positive squares in 2 ways, for example, as 77176225 + 549081 = 8785^2 + 741^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141561 + ... + 142108.

Almost surely, 2^77725306 is an apocalyptic number.

77725306 is a deficient number, since it is larger than the sum of its proper divisors (39714074).

77725306 is a wasteful number, since it uses less digits than its factorization.

77725306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283808.

The product of its (nonzero) digits is 61740, while the sum is 37.

The square root of 77725306 is about 8816.1956647978. The cubic root of 77725306 is about 426.7637082602.

The spelling of 77725306 in words is "seventy-seven million, seven hundred twenty-five thousand, three hundred six".