76724 has 6 divisors (see below), whose sum is σ = 134274. Its totient is φ = 38360.

The previous prime is 76717. The next prime is 76733. The reversal of 76724 is 42767.

It can be written as a sum of positive squares in only one way, i.e., 71824 + 4900 = 268^2 + 70^2 .

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 76693 and 76702.

It is a congruent number.

It is an unprimeable number.

76724 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9587 + ... + 9594.

It is an arithmetic number, because the mean of its divisors is an integer number (22379).

2⁷⁶⁷²⁴ is an apocalyptic number.

It is an amenable number.

76724 is a deficient number, since it is larger than the sum of its proper divisors (57550).

76724 is a wasteful number, since it uses less digits than its factorization.

76724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19185 (or 19183 counting only the distinct ones).

The product of its digits is 2352, while the sum is 26.

The square root of 76724 is about 276.9909745822. The cubic root of 76724 is about 42.4923169503.

The spelling of 76724 in words is "seventy-six thousand, seven hundred twenty-four".