616489 has 2 divisors, whose sum is σ = 616490. Its totient is φ = 616488.

The previous prime is 616481. The next prime is 616501. The reversal of 616489 is 984616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 514089 + 102400 = 717^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 616489 - 2³ = 616481 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (616481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308244 + 308245.

It is an arithmetic number, because the mean of its divisors is an integer number (308245).

2⁶¹⁶⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

616489 is a deficient number, since it is larger than the sum of its proper divisors (1).

616489 is an equidigital number, since it uses as much as digits as its factorization.

616489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 616489 is about 785.1681348603. The cubic root of 616489 is about 85.1089260973.

The spelling of 616489 in words is "six hundred sixteen thousand, four hundred eighty-nine".