68280724 has 12 divisors (see below), whose sum is σ = 123346048. Its totient is φ = 33039000.

The previous prime is 68280691. The next prime is 68280731. The reversal of 68280724 is 42708286.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275202 + ... + 275449.

Almost surely, 2^68280724 is an apocalyptic number.

It is an amenable number.

68280724 is a deficient number, since it is larger than the sum of its proper divisors (55065324).

68280724 is a wasteful number, since it uses less digits than its factorization.

68280724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550686 (or 550684 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 68280724 is about 8263.2151127754. The cubic root of 68280724 is about 408.7264147969.

It can be divided in two parts, 682 and 80724, that added together give a triangular number (81406 = T₄₀₃).

The spelling of 68280724 in words is "sixty-eight million, two hundred eighty thousand, seven hundred twenty-four".