774494964 has 18 divisors (see below), whose sum is σ = 1957751250. Its totient is φ = 258164976.

The previous prime is 774494953. The next prime is 774494969. The reversal of 774494964 is 469494477.

It can be written as a sum of positive squares in only one way, i.e., 751856400 + 22638564 = 27420^2 + 4758^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×774494964² = 1199684898522722592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 774494964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774494969) 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 in 5 ways as a sum of consecutive naturals, for example, 10756839 + ... + 10756910.

Almost surely, 2^774494964 is an apocalyptic number.

It is an amenable number.

774494964 is an abundant number, since it is smaller than the sum of its proper divisors (1183256286).

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

774494964 is a wasteful number, since it uses less digits than its factorization.

774494964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21513759 (or 21513754 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The square root of 774494964 is about 27829.7496215830. The cubic root of 774494964 is about 918.3457054433.

The spelling of 774494964 in words is "seven hundred seventy-four million, four hundred ninety-four thousand, nine hundred sixty-four".