83668724 has 6 divisors (see below), whose sum is σ = 146420274. Its totient is φ = 41834360.

The previous prime is 83668709. The next prime is 83668751. The reversal of 83668724 is 42786638.

It can be written as a sum of positive squares in only one way, i.e., 65092624 + 18576100 = 8068^2 + 4310^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10458587 + ... + 10458594.

It is an arithmetic number, because the mean of its divisors is an integer number (24403379).

Almost surely, 2^83668724 is an apocalyptic number.

It is an amenable number.

83668724 is a deficient number, since it is larger than the sum of its proper divisors (62751550).

83668724 is a wasteful number, since it uses less digits than its factorization.

83668724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20917185 (or 20917183 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 83668724 is about 9147.0609487420. The cubic root of 83668724 is about 437.3754294592.

The spelling of 83668724 in words is "eighty-three million, six hundred sixty-eight thousand, seven hundred twenty-four".