83775156 has 12 divisors (see below), whose sum is σ = 195475392. Its totient is φ = 27925048.

The previous prime is 83775151. The next prime is 83775173. The reversal of 83775156 is 65157738.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83775151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3490620 + ... + 3490643.

It is an arithmetic number, because the mean of its divisors is an integer number (16289616).

Almost surely, 2^83775156 is an apocalyptic number.

It is an amenable number.

83775156 is an abundant number, since it is smaller than the sum of its proper divisors (111700236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83775156 is a wasteful number, since it uses less digits than its factorization.

83775156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6981270 (or 6981268 counting only the distinct ones).

The product of its digits is 176400, while the sum is 42.

The square root of 83775156 is about 9152.8769247707. The cubic root of 83775156 is about 437.5608074392.

The spelling of 83775156 in words is "eighty-three million, seven hundred seventy-five thousand, one hundred fifty-six".