77530305 has 8 divisors (see below), whose sum is σ = 124048512. Its totient is φ = 41349488.

The previous prime is 77530301. The next prime is 77530351. The reversal of 77530305 is 50303577.

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

It is a cyclic number.

It is not a de Polignac number, because 77530305 - 2² = 77530301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77530301) 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 7 ways as a sum of consecutive naturals, for example, 2584329 + ... + 2584358.

It is an arithmetic number, because the mean of its divisors is an integer number (15506064).

Almost surely, 2^77530305 is an apocalyptic number.

It is an amenable number.

77530305 is a deficient number, since it is larger than the sum of its proper divisors (46518207).

77530305 is a wasteful number, since it uses less digits than its factorization.

77530305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5168695.

The product of its (nonzero) digits is 11025, while the sum is 30.

The square root of 77530305 is about 8805.1294709391. The cubic root of 77530305 is about 426.4065142469.

The spelling of 77530305 in words is "seventy-seven million, five hundred thirty thousand, three hundred five".