8628288649 has 2 divisors, whose sum is σ = 8628288650. Its totient is φ = 8628288648.

The previous prime is 8628288637. The next prime is 8628288661. The reversal of 8628288649 is 9468828268.

It is a balanced prime because it is at equal distance from previous prime (8628288637) and next prime (8628288661).

It can be written as a sum of positive squares in only one way, i.e., 8157702400 + 470586249 = 90320^2 + 21693^2 .

It is a cyclic number.

It is not a de Polignac number, because 8628288649 - 2¹³ = 8628280457 is a prime.

It is not a weakly prime, because it can be changed into another prime (8628288049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4314144324 + 4314144325.

It is an arithmetic number, because the mean of its divisors is an integer number (4314144325).

Almost surely, 2^8628288649 is an apocalyptic number.

It is an amenable number.

8628288649 is a deficient number, since it is larger than the sum of its proper divisors (1).

8628288649 is an equidigital number, since it uses as much as digits as its factorization.

8628288649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21233664, while the sum is 61.

The square root of 8628288649 is about 92888.5819086501. The cubic root of 8628288649 is about 2051.0435812123.

The spelling of 8628288649 in words is "eight billion, six hundred twenty-eight million, two hundred eighty-eight thousand, six hundred forty-nine".