617040220 has 24 divisors (see below), whose sum is σ = 1297994544. Its totient is φ = 246395136.

The previous prime is 617040199. The next prime is 617040227. The reversal of 617040220 is 22040716.

It is a junction number, because it is equal to n+sod(n) for n = 617040191 and 617040200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617040227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14154 + ... + 37873.

It is an arithmetic number, because the mean of its divisors is an integer number (54083106).

Almost surely, 2^617040220 is an apocalyptic number.

It is an amenable number.

617040220 is an abundant number, since it is smaller than the sum of its proper divisors (680954324).

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

617040220 is a wasteful number, since it uses less digits than its factorization.

617040220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52629 (or 52627 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 617040220 is about 24840.2942816707. The cubic root of 617040220 is about 851.3428462867.

Adding to 617040220 its reverse (22040716), we get a palindrome (639080936).

The spelling of 617040220 in words is "six hundred seventeen million, forty thousand, two hundred twenty".