772691 has 2 divisors, whose sum is σ = 772692. Its totient is φ = 772690.

The previous prime is 772669. The next prime is 772697. The reversal of 772691 is 196277.

It is a strong prime.

It is an emirp because it is prime and its reverse (196277) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-772691 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 772691.

It is not a weakly prime, because it can be changed into another prime (772697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386345 + 386346.

It is an arithmetic number, because the mean of its divisors is an integer number (386346).

2⁷⁷²⁶⁹¹ is an apocalyptic number.

772691 is a deficient number, since it is larger than the sum of its proper divisors (1).

772691 is an equidigital number, since it uses as much as digits as its factorization.

772691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 32.

The square root of 772691 is about 879.0284409506. The cubic root of 772691 is about 91.7632143455.

The spelling of 772691 in words is "seven hundred seventy-two thousand, six hundred ninety-one".