68424520 has 16 divisors (see below), whose sum is σ = 153955260. Its totient is φ = 27369792.

The previous prime is 68424509. The next prime is 68424523. The reversal of 68424520 is 2542486.

It can be written as a sum of positive squares in 2 ways, for example, as 62441604 + 5982916 = 7902^2 + 2446^2 .

It is not an unprimeable number, because it can be changed into a prime (68424523) 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, 855267 + ... + 855346.

Almost surely, 2^68424520 is an apocalyptic number.

It is an amenable number.

68424520 is an abundant number, since it is smaller than the sum of its proper divisors (85530740).

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

68424520 is a wasteful number, since it uses less digits than its factorization.

68424520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710624 (or 1710620 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 68424520 is about 8271.9115082307. The cubic root of 68424520 is about 409.0131331679.

The spelling of 68424520 in words is "sixty-eight million, four hundred twenty-four thousand, five hundred twenty".