756420667 has 2 divisors, whose sum is σ = 756420668. Its totient is φ = 756420666.

The previous prime is 756420649. The next prime is 756420713. The reversal of 756420667 is 766024657.

It is a weak prime.

It is an emirp because it is prime and its reverse (766024657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 756420667 - 2²⁷ = 622202939 is a prime.

It is not a weakly prime, because it can be changed into another prime (756420607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 378210333 + 378210334.

It is an arithmetic number, because the mean of its divisors is an integer number (378210334).

Almost surely, 2^756420667 is an apocalyptic number.

756420667 is a deficient number, since it is larger than the sum of its proper divisors (1).

756420667 is an equidigital number, since it uses as much as digits as its factorization.

756420667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 756420667 is about 27503.1028613137. The cubic root of 756420667 is about 911.1456275305.

The spelling of 756420667 in words is "seven hundred fifty-six million, four hundred twenty thousand, six hundred sixty-seven".