774406818 has 40 divisors (see below), whose sum is σ = 1782157212. Its totient is φ = 251157024.

The previous prime is 774406817. The next prime is 774406819. The reversal of 774406818 is 818604477.

It is an interprime number because it is at equal distance from previous prime (774406817) and next prime (774406819).

It can be written as a sum of positive squares in 2 ways, for example, as 668584449 + 105822369 = 25857^2 + 10287^2 .

It is not an unprimeable number, because it can be changed into a prime (774406817) 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 in 19 ways as a sum of consecutive naturals, for example, 58605 + ... + 70592.

Almost surely, 2^774406818 is an apocalyptic number.

774406818 is an abundant number, since it is smaller than the sum of its proper divisors (1007750394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

774406818 is a wasteful number, since it uses less digits than its factorization.

774406818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129248 (or 129239 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 774406818 is about 27828.1659115365. The cubic root of 774406818 is about 918.3108648588.

The spelling of 774406818 in words is "seven hundred seventy-four million, four hundred six thousand, eight hundred eighteen".