653212020 has 48 divisors (see below), whose sum is σ = 1925259840. Its totient is φ = 165021696.

The previous prime is 653212019. The next prime is 653212031. The reversal of 653212020 is 20212356.

It is a congruent number.

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, 285357 + ... + 287636.

It is an arithmetic number, because the mean of its divisors is an integer number (40109580).

Almost surely, 2^653212020 is an apocalyptic number.

653212020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

653212020 is an abundant number, since it is smaller than the sum of its proper divisors (1272047820).

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

653212020 is a wasteful number, since it uses less digits than its factorization.

653212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573024 (or 573022 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 653212020 is about 25558.0128335518. The cubic root of 653212020 is about 867.6636216324.

Adding to 653212020 its reverse (20212356), we get a palindrome (673424376).

The spelling of 653212020 in words is "six hundred fifty-three million, two hundred twelve thousand, twenty".