316649 has 2 divisors, whose sum is σ = 316650. Its totient is φ = 316648.

The previous prime is 316637. The next prime is 316661. The reversal of 316649 is 946613.

It is a balanced prime because it is at equal distance from previous prime (316637) and next prime (316661).

It can be written as a sum of positive squares in only one way, i.e., 310249 + 6400 = 557^2 + 80^2 .

It is a cyclic number.

It is not a de Polignac number, because 316649 - 2⁴ = 316633 is a prime.

It is not a weakly prime, because it can be changed into another prime (316699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158324 + 158325.

It is an arithmetic number, because the mean of its divisors is an integer number (158325).

2³¹⁶⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

316649 is a deficient number, since it is larger than the sum of its proper divisors (1).

316649 is an equidigital number, since it uses as much as digits as its factorization.

316649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 316649 is about 562.7157364069. The cubic root of 316649 is about 68.1594441874.

The spelling of 316649 in words is "three hundred sixteen thousand, six hundred forty-nine".