83840756 has 6 divisors (see below), whose sum is σ = 146721330. Its totient is φ = 41920376.

The previous prime is 83840747. The next prime is 83840789. The reversal of 83840756 is 65704838.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 48080356 + 35760400 = 6934^2 + 5980^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10480091 + ... + 10480098.

It is an arithmetic number, because the mean of its divisors is an integer number (24453555).

Almost surely, 2^83840756 is an apocalyptic number.

It is an amenable number.

83840756 is a deficient number, since it is larger than the sum of its proper divisors (62880574).

83840756 is a wasteful number, since it uses less digits than its factorization.

83840756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20960193 (or 20960191 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 83840756 is about 9156.4597962313. The cubic root of 83840756 is about 437.6749880682.

The spelling of 83840756 in words is "eighty-three million, eight hundred forty thousand, seven hundred fifty-six".