68570220 has 24 divisors (see below), whose sum is σ = 191996784. Its totient is φ = 18285376.

The previous prime is 68570219. The next prime is 68570261. The reversal of 68570220 is 2207586.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571359 + ... + 571478.

It is an arithmetic number, because the mean of its divisors is an integer number (7999866).

Almost surely, 2^68570220 is an apocalyptic number.

68570220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68570220 is an abundant number, since it is smaller than the sum of its proper divisors (123426564).

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

68570220 is a wasteful number, since it uses less digits than its factorization.

68570220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142849 (or 1142847 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 68570220 is about 8280.7137373538. The cubic root of 68570220 is about 409.3032385527.

The spelling of 68570220 in words is "sixty-eight million, five hundred seventy thousand, two hundred twenty".