68115630 has 32 divisors (see below), whose sum is σ = 178339968. Its totient is φ = 16512800.

The previous prime is 68115623. The next prime is 68115659. The reversal of 68115630 is 3651186.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102876 + ... + 103535.

It is an arithmetic number, because the mean of its divisors is an integer number (5573124).

Almost surely, 2^68115630 is an apocalyptic number.

68115630 is an abundant number, since it is smaller than the sum of its proper divisors (110224338).

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

68115630 is a wasteful number, since it uses less digits than its factorization.

68115630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206432.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 68115630 is about 8253.2193718573. The cubic root of 68115630 is about 408.3967329944.

It can be divided in two parts, 681156 and 30, that added together give a palindrome (681186).

The spelling of 68115630 in words is "sixty-eight million, one hundred fifteen thousand, six hundred thirty".