78086077 has 4 divisors (see below), whose sum is σ = 78701056. Its totient is φ = 77471100.

The previous prime is 78086059. The next prime is 78086089. The reversal of 78086077 is 77068087.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77068087 = 1499 ⋅51413.

It is a cyclic number.

It is not a de Polignac number, because 78086077 - 2¹¹ = 78084029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78086377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307299 + ... + 307552.

It is an arithmetic number, because the mean of its divisors is an integer number (19675264).

Almost surely, 2^78086077 is an apocalyptic number.

It is an amenable number.

78086077 is a deficient number, since it is larger than the sum of its proper divisors (614979).

78086077 is a wasteful number, since it uses less digits than its factorization.

78086077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614978.

The product of its (nonzero) digits is 131712, while the sum is 43.

The square root of 78086077 is about 8836.6326731397. The cubic root of 78086077 is about 427.4229803224.

The spelling of 78086077 in words is "seventy-eight million, eighty-six thousand, seventy-seven".