768327649 has 2 divisors, whose sum is σ = 768327650. Its totient is φ = 768327648.

The previous prime is 768327641. The next prime is 768327787. The reversal of 768327649 is 946723867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 732243600 + 36084049 = 27060^2 + 6007^2 .

It is a cyclic number.

It is not a de Polignac number, because 768327649 - 2³ = 768327641 is a prime.

It is a super-4 number, since 4×768327649⁴ (a number of 37 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 768327596 and 768327605.

It is not a weakly prime, because it can be changed into another prime (768327641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384163824 + 384163825.

It is an arithmetic number, because the mean of its divisors is an integer number (384163825).

Almost surely, 2^768327649 is an apocalyptic number.

It is an amenable number.

768327649 is a deficient number, since it is larger than the sum of its proper divisors (1).

768327649 is an equidigital number, since it uses as much as digits as its factorization.

768327649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 52.

The square root of 768327649 is about 27718.7237981838. The cubic root of 768327649 is about 915.9016062482.

The spelling of 768327649 in words is "seven hundred sixty-eight million, three hundred twenty-seven thousand, six hundred forty-nine".