616523 has 2 divisors, whose sum is σ = 616524. Its totient is φ = 616522.

The previous prime is 616519. The next prime is 616529. The reversal of 616523 is 325616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 616523 - 2² = 616519 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (616529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308261 + 308262.

It is an arithmetic number, because the mean of its divisors is an integer number (308262).

2⁶¹⁶⁵²³ is an apocalyptic number.

616523 is a deficient number, since it is larger than the sum of its proper divisors (1).

616523 is an equidigital number, since it uses as much as digits as its factorization.

616523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 616523 is about 785.1897859753. The cubic root of 616523 is about 85.1104906834.

The spelling of 616523 in words is "six hundred sixteen thousand, five hundred twenty-three".