774464987 has 2 divisors, whose sum is σ = 774464988. Its totient is φ = 774464986.

The previous prime is 774464963. The next prime is 774464989. The reversal of 774464987 is 789464477.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-774464987 is a prime.

Together with 774464989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (774464989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387232493 + 387232494.

It is an arithmetic number, because the mean of its divisors is an integer number (387232494).

Almost surely, 2^774464987 is an apocalyptic number.

774464987 is a deficient number, since it is larger than the sum of its proper divisors (1).

774464987 is an equidigital number, since it uses as much as digits as its factorization.

774464987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9483264, while the sum is 56.

The square root of 774464987 is about 27829.2110380442. The cubic root of 774464987 is about 918.3338570321. Note that the first 3 decimals are identical.

The spelling of 774464987 in words is "seven hundred seventy-four million, four hundred sixty-four thousand, nine hundred eighty-seven".