775806396 has 12 divisors (see below), whose sum is σ = 1810214952. Its totient is φ = 258602128.

The previous prime is 775806391. The next prime is 775806397. The reversal of 775806396 is 693608577.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775806391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32325255 + ... + 32325278.

It is an arithmetic number, because the mean of its divisors is an integer number (150851246).

Almost surely, 2^775806396 is an apocalyptic number.

It is an amenable number.

775806396 is an abundant number, since it is smaller than the sum of its proper divisors (1034408556).

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

775806396 is a wasteful number, since it uses less digits than its factorization.

775806396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64650540 (or 64650538 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 51.

The square root of 775806396 is about 27853.3013483142. The cubic root of 775806396 is about 918.8637500514.

The spelling of 775806396 in words is "seven hundred seventy-five million, eight hundred six thousand, three hundred ninety-six".