68624680 has 16 divisors (see below), whose sum is σ = 154405620. Its totient is φ = 27449856.

The previous prime is 68624671. The next prime is 68624681. The reversal of 68624680 is 8642686.

It can be written as a sum of positive squares in 2 ways, for example, as 61559716 + 7064964 = 7846^2 + 2658^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1715617 = 68624680 / (6 + 8 + 6 + 2 + 4 + 6 + 8 + 0).

It is not an unprimeable number, because it can be changed into a prime (68624681) 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, 857769 + ... + 857848.

Almost surely, 2^68624680 is an apocalyptic number.

It is an amenable number.

68624680 is an abundant number, since it is smaller than the sum of its proper divisors (85780940).

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

68624680 is a wasteful number, since it uses less digits than its factorization.

68624680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715628 (or 1715624 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 68624680 is about 8284.0014485754. The cubic root of 68624680 is about 409.4115691358.

The spelling of 68624680 in words is "sixty-eight million, six hundred twenty-four thousand, six hundred eighty".