617168144 has 20 divisors (see below), whose sum is σ = 1197079260. Its totient is φ = 308244480.

The previous prime is 617168129. The next prime is 617168147. The reversal of 617168144 is 441861716.

It can be written as a sum of positive squares in 2 ways, for example, as 233478400 + 383689744 = 15280^2 + 19588^2 .

It is a junction number, because it is equal to n+sod(n) for n = 617168098 and 617168107.

It is not an unprimeable number, because it can be changed into a prime (617168147) 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, 5897 + ... + 35624.

It is an arithmetic number, because the mean of its divisors is an integer number (59853963).

Almost surely, 2^617168144 is an apocalyptic number.

It is an amenable number.

617168144 is a deficient number, since it is larger than the sum of its proper divisors (579911116).

617168144 is a wasteful number, since it uses less digits than its factorization.

617168144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42458 (or 42452 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 617168144 is about 24842.8690774637. The cubic root of 617168144 is about 851.4016753297.

The spelling of 617168144 in words is "six hundred seventeen million, one hundred sixty-eight thousand, one hundred forty-four".