68131630 has 64 divisors (see below), whose sum is σ = 144921600. Its totient is φ = 22581504.

The previous prime is 68131621. The next prime is 68131633. The reversal of 68131630 is 3613186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68131633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342271 + ... + 342469.

It is an arithmetic number, because the mean of its divisors is an integer number (2264400).

Almost surely, 2^68131630 is an apocalyptic number.

68131630 is an abundant number, since it is smaller than the sum of its proper divisors (76789970).

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

68131630 is a wasteful number, since it uses less digits than its factorization.

68131630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 68131630 is about 8254.1886336575. The cubic root of 68131630 is about 408.4287072328.

The spelling of 68131630 in words is "sixty-eight million, one hundred thirty-one thousand, six hundred thirty".