56865649 has 2 divisors, whose sum is σ = 56865650. Its totient is φ = 56865648.

The previous prime is 56865631. The next prime is 56865667. The reversal of 56865649 is 94656865.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (56865631) and next prime (56865667).

It can be written as a sum of positive squares in only one way, i.e., 43138624 + 13727025 = 6568^2 + 3705^2 .

It is a cyclic number.

It is not a de Polignac number, because 56865649 - 2¹³ = 56857457 is a prime.

It is not a weakly prime, because it can be changed into another prime (56869649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28432824 + 28432825.

It is an arithmetic number, because the mean of its divisors is an integer number (28432825).

Almost surely, 2^56865649 is an apocalyptic number.

It is an amenable number.

56865649 is a deficient number, since it is larger than the sum of its proper divisors (1).

56865649 is an equidigital number, since it uses as much as digits as its factorization.

56865649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 49.

The square root of 56865649 is about 7540.9315737513. The cubic root of 56865649 is about 384.5475068451.

The spelling of 56865649 in words is "fifty-six million, eight hundred sixty-five thousand, six hundred forty-nine".