617231140 has 12 divisors (see below), whose sum is σ = 1296185436. Its totient is φ = 246892448.

The previous prime is 617231137. The next prime is 617231149. The reversal of 617231140 is 41132716.

It can be written as a sum of positive squares in 2 ways, for example, as 482856676 + 134374464 = 21974^2 + 11592^2 .

It is not an unprimeable number, because it can be changed into a prime (617231149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15430759 + ... + 15430798.

It is an arithmetic number, because the mean of its divisors is an integer number (108015453).

Almost surely, 2^617231140 is an apocalyptic number.

It is an amenable number.

617231140 is an abundant number, since it is smaller than the sum of its proper divisors (678954296).

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

617231140 is a wasteful number, since it uses less digits than its factorization.

617231140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30861566 (or 30861564 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 617231140 is about 24844.1369340937. The cubic root of 617231140 is about 851.4306426247.

Adding to 617231140 its reverse (41132716), we get a palindrome (658363856).

The spelling of 617231140 in words is "six hundred seventeen million, two hundred thirty-one thousand, one hundred forty".