616769 has 2 divisors, whose sum is σ = 616770. Its totient is φ = 616768.

The previous prime is 616757. The next prime is 616783. The reversal of 616769 is 967616.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 547600 + 69169 = 740^2 + 263^2 .

It is a cyclic number.

It is not a de Polignac number, because 616769 - 2⁸ = 616513 is a prime.

It is a super-2 number, since 2×616769² = 760807998722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

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

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (616729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308384 + 308385.

It is an arithmetic number, because the mean of its divisors is an integer number (308385).

2⁶¹⁶⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

616769 is a deficient number, since it is larger than the sum of its proper divisors (1).

616769 is an equidigital number, since it uses as much as digits as its factorization.

616769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 616769 is about 785.3464203777. The cubic root of 616769 is about 85.1218092103.

The spelling of 616769 in words is "six hundred sixteen thousand, seven hundred sixty-nine".