68363820 has 216 divisors, whose sum is σ = 252461664. Its totient is φ = 14902272.

The previous prime is 68363809. The next prime is 68363821. The reversal of 68363820 is 2836386.

It is a super-2 number, since 2×68363820² = 9347223769984800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (68363821) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 202692 + ... + 203028.

It is an arithmetic number, because the mean of its divisors is an integer number (1168804).

Almost surely, 2^68363820 is an apocalyptic number.

68363820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68363820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126230832).

68363820 is an abundant number, since it is smaller than the sum of its proper divisors (184097844).

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

68363820 is a wasteful number, since it uses less digits than its factorization.

68363820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 68363820 is about 8268.2416510404. The cubic root of 68363820 is about 408.8921509905.

The spelling of 68363820 in words is "sixty-eight million, three hundred sixty-three thousand, eight hundred twenty".