77796385 has 8 divisors (see below), whose sum is σ = 95879016. Its totient is φ = 60554880.

The previous prime is 77796371. The next prime is 77796427. The reversal of 77796385 is 58369777.

It is a happy number.

77796385 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 4 ways, for example, as 8856576 + 68939809 = 2976^2 + 8303^2 .

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

It is not a de Polignac number, because 77796385 - 2⁵ = 77796353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210076 + ... + 210445.

It is an arithmetic number, because the mean of its divisors is an integer number (11984877).

Almost surely, 2^77796385 is an apocalyptic number.

It is an amenable number.

77796385 is a deficient number, since it is larger than the sum of its proper divisors (18082631).

77796385 is a wasteful number, since it uses less digits than its factorization.

77796385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420563.

The product of its digits is 2222640, while the sum is 52.

The square root of 77796385 is about 8820.2259041365. The cubic root of 77796385 is about 426.8937589785.

The spelling of 77796385 in words is "seventy-seven million, seven hundred ninety-six thousand, three hundred eighty-five".