77380079 has 8 divisors (see below), whose sum is σ = 90591648. Its totient is φ = 64707840.

The previous prime is 77380063. The next prime is 77380087. The reversal of 77380079 is 97008377.

It is a happy number.

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

It is not a de Polignac number, because 77380079 - 2⁴ = 77380063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77380019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134522 + ... + 135095.

It is an arithmetic number, because the mean of its divisors is an integer number (11323956).

Almost surely, 2^77380079 is an apocalyptic number.

77380079 is a deficient number, since it is larger than the sum of its proper divisors (13211569).

77380079 is a wasteful number, since it uses less digits than its factorization.

77380079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269665.

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 77380079 is about 8796.5947388748. The cubic root of 77380079 is about 426.1309284055.

The spelling of 77380079 in words is "seventy-seven million, three hundred eighty thousand, seventy-nine".