576649 has 2 divisors, whose sum is σ = 576650. Its totient is φ = 576648.

The previous prime is 576647. The next prime is 576659. The reversal of 576649 is 946675.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 573049 + 3600 = 757^2 + 60^2 .

It is a cyclic number.

It is not a de Polignac number, because 576649 - 2¹ = 576647 is a prime.

Together with 576647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (576647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288324 + 288325.

It is an arithmetic number, because the mean of its divisors is an integer number (288325).

2⁵⁷⁶⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

576649 is a deficient number, since it is larger than the sum of its proper divisors (1).

576649 is an equidigital number, since it uses as much as digits as its factorization.

576649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 576649 is about 759.3740843616. The cubic root of 576649 is about 83.2345906002.

It can be divided in two parts, 576 and 649, that added together give a triangular number (1225 = T₄₉).

The spelling of 576649 in words is "five hundred seventy-six thousand, six hundred forty-nine".