83275778 has 16 divisors (see below), whose sum is σ = 133379136. Its totient is φ = 38900400.

The previous prime is 83275771. The next prime is 83275781. The reversal of 83275778 is 87757238.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83275771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19073 + ... + 23028.

It is an arithmetic number, because the mean of its divisors is an integer number (8336196).

Almost surely, 2^83275778 is an apocalyptic number.

83275778 is a deficient number, since it is larger than the sum of its proper divisors (50103358).

83275778 is a wasteful number, since it uses less digits than its factorization.

83275778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42169.

The product of its digits is 658560, while the sum is 47.

The square root of 83275778 is about 9125.5563118092. The cubic root of 83275778 is about 436.6896507789.

The spelling of 83275778 in words is "eighty-three million, two hundred seventy-five thousand, seven hundred seventy-eight".