68263770 has 128 divisors (see below), whose sum is σ = 185794560. Its totient is φ = 15966720.

The previous prime is 68263763. The next prime is 68263777. The reversal of 68263770 is 7736286.

68263770 is a nontrivial binomial coefficient, being equal to C(11685, 2).

It is an interprime number because it is at equal distance from previous prime (68263763) and next prime (68263777).

It is a super-2 number, since 2×68263770² = 9319884589225800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68263777) 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 63 ways as a sum of consecutive naturals, for example, 537447 + ... + 537573.

It is an arithmetic number, because the mean of its divisors is an integer number (1451520).

Almost surely, 2^68263770 is an apocalyptic number.

68263770 is the 11684-th triangular number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68263770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92897280).

68263770 is an abundant number, since it is smaller than the sum of its proper divisors (117530790).

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

68263770 is a wasteful number, since it uses less digits than its factorization.

68263770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 68263770 is about 8262.1891772096. The cubic root of 68263770 is about 408.6925832808.

The spelling of 68263770 in words is "sixty-eight million, two hundred sixty-three thousand, seven hundred seventy".