773811648 has 42 divisors (see below), whose sum is σ = 2217993024. Its totient is φ = 257937024.

The previous prime is 773811641. The next prime is 773811671. The reversal of 773811648 is 846118377.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (773811641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 671136 + ... + 672287.

Almost surely, 2^773811648 is an apocalyptic number.

It is an amenable number.

773811648 is an abundant number, since it is smaller than the sum of its proper divisors (1444181376).

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

773811648 is a wasteful number, since it uses less digits than its factorization.

773811648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343441 (or 1343428 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 773811648 is about 27817.4701941064. The cubic root of 773811648 is about 918.0755487684.

The spelling of 773811648 in words is "seven hundred seventy-three million, eight hundred eleven thousand, six hundred forty-eight".