77825383 has 4 divisors (see below), whose sum is σ = 77846400. Its totient is φ = 77804368.

The previous prime is 77825369. The next prime is 77825389. The reversal of 77825383 is 38352877.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77825383 - 2⁵ = 77825351 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 (77825389) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3310 + ... + 12907.

It is an arithmetic number, because the mean of its divisors is an integer number (19461600).

Almost surely, 2^77825383 is an apocalyptic number.

77825383 is a deficient number, since it is larger than the sum of its proper divisors (21017).

77825383 is a wasteful number, since it uses less digits than its factorization.

77825383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21016.

The product of its digits is 282240, while the sum is 43.

The square root of 77825383 is about 8821.8695864312. The cubic root of 77825383 is about 426.9467928372.

The spelling of 77825383 in words is "seventy-seven million, eight hundred twenty-five thousand, three hundred eighty-three".