77040305 has 8 divisors (see below), whose sum is σ = 94598592. Its totient is φ = 60198768.

The previous prime is 77040289. The next prime is 77040319. The reversal of 77040305 is 50304077.

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 77040305 - 2⁴ = 77040289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178949 + ... + 179378.

It is an arithmetic number, because the mean of its divisors is an integer number (11824824).

Almost surely, 2^77040305 is an apocalyptic number.

It is an amenable number.

77040305 is a deficient number, since it is larger than the sum of its proper divisors (17558287).

77040305 is a wasteful number, since it uses less digits than its factorization.

77040305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358375.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 77040305 is about 8777.2606774551. The cubic root of 77040305 is about 425.5063031751.

The spelling of 77040305 in words is "seventy-seven million, forty thousand, three hundred five".