68087220 has 24 divisors (see below), whose sum is σ = 190644384. Its totient is φ = 18156576.

The previous prime is 68087207. The next prime is 68087233. The reversal of 68087220 is 2278086.

It is an interprime number because it is at equal distance from previous prime (68087207) and next prime (68087233).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567334 + ... + 567453.

It is an arithmetic number, because the mean of its divisors is an integer number (7943516).

Almost surely, 2^68087220 is an apocalyptic number.

68087220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68087220 is an abundant number, since it is smaller than the sum of its proper divisors (122557164).

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

68087220 is a wasteful number, since it uses less digits than its factorization.

68087220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134799 (or 1134797 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 68087220 is about 8251.4980458096. The cubic root of 68087220 is about 408.3399463967.

It can be divided in two parts, 6808 and 7220, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 68087220 in words is "sixty-eight million, eighty-seven thousand, two hundred twenty".