68537630 has 16 divisors (see below), whose sum is σ = 140991840. Its totient is φ = 23498592.

The previous prime is 68537629. The next prime is 68537633. The reversal of 68537630 is 3673586.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68537633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489485 + ... + 489624.

It is an arithmetic number, because the mean of its divisors is an integer number (8811990).

Almost surely, 2^68537630 is an apocalyptic number.

68537630 is an abundant number, since it is smaller than the sum of its proper divisors (72454210).

68537630 is a wasteful number, since it uses less digits than its factorization.

68537630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979123.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 68537630 is about 8278.7456779394. The cubic root of 68537630 is about 409.2383838370.

The spelling of 68537630 in words is "sixty-eight million, five hundred thirty-seven thousand, six hundred thirty".