605645220 has 48 divisors (see below), whose sum is σ = 1709180928. Its totient is φ = 160231680.

The previous prime is 605645203. The next prime is 605645263. The reversal of 605645220 is 22546506.

It is a super-2 number, since 2×605645220² = 733612265017696800, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 32121 + ... + 47360.

It is an arithmetic number, because the mean of its divisors is an integer number (35607936).

Almost surely, 2^605645220 is an apocalyptic number.

605645220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

605645220 is an abundant number, since it is smaller than the sum of its proper divisors (1103535708).

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

605645220 is a wasteful number, since it uses less digits than its factorization.

605645220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79620 (or 79618 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 605645220 is about 24609.8602190260. The cubic root of 605645220 is about 846.0696140649.

The spelling of 605645220 in words is "six hundred five million, six hundred forty-five thousand, two hundred twenty".