68633220 has 24 divisors (see below), whose sum is σ = 192173184. Its totient is φ = 18302176.

The previous prime is 68633183. The next prime is 68633291. The reversal of 68633220 is 2233686.

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

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, 571884 + ... + 572003.

It is an arithmetic number, because the mean of its divisors is an integer number (8007216).

Almost surely, 2^68633220 is an apocalyptic number.

68633220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68633220 is an abundant number, since it is smaller than the sum of its proper divisors (123539964).

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

68633220 is a wasteful number, since it uses less digits than its factorization.

68633220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143899 (or 1143897 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 68633220 is about 8284.5168839227. The cubic root of 68633220 is about 409.4285515089.

The spelling of 68633220 in words is "sixty-eight million, six hundred thirty-three thousand, two hundred twenty".