774991040 has 28 divisors (see below), whose sum is σ = 1845448176. Its totient is φ = 309996288.

The previous prime is 774991039. The next prime is 774991043. The reversal of 774991040 is 40199477.

It is a happy number.

It is a super-2 number, since 2×774991040² = 1201222224160563200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (774991043) 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 in 3 ways as a sum of consecutive naturals, for example, 1210604 + ... + 1211243.

Almost surely, 2^774991040 is an apocalyptic number.

It is an amenable number.

774991040 is an abundant number, since it is smaller than the sum of its proper divisors (1070457136).

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

774991040 is a wasteful number, since it uses less digits than its factorization.

774991040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421864 (or 2421854 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 774991040 is about 27838.6608873344. The cubic root of 774991040 is about 918.5417351373.

It can be divided in two parts, 7749 and 91040, that added together give a palindrome (98789).

The spelling of 774991040 in words is "seven hundred seventy-four million, nine hundred ninety-one thousand, forty".