613216020 has 48 divisors (see below), whose sum is σ = 1776216960. Its totient is φ = 157885056.

The previous prime is 613215997. The next prime is 613216031. The reversal of 613216020 is 20612316.

It is a happy number.

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, 174472 + ... + 177951.

It is an arithmetic number, because the mean of its divisors is an integer number (37004520).

Almost surely, 2^613216020 is an apocalyptic number.

613216020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

613216020 is an abundant number, since it is smaller than the sum of its proper divisors (1163000940).

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

613216020 is a wasteful number, since it uses less digits than its factorization.

613216020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352464 (or 352462 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 613216020 is about 24763.1989048265. The cubic root of 613216020 is about 849.5804249890.

Adding to 613216020 its reverse (20612316), we get a palindrome (633828336).

The spelling of 613216020 in words is "six hundred thirteen million, two hundred sixteen thousand, twenty".