797869780 has 12 divisors (see below), whose sum is σ = 1675526580. Its totient is φ = 319147904.

The previous prime is 797869759. The next prime is 797869811. The reversal of 797869780 is 87968797.

It can be written as a sum of positive squares in 2 ways, for example, as 394181316 + 403688464 = 19854^2 + 20092^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19946725 + ... + 19946764.

It is an arithmetic number, because the mean of its divisors is an integer number (139627215).

Almost surely, 2^797869780 is an apocalyptic number.

It is an amenable number.

797869780 is an abundant number, since it is smaller than the sum of its proper divisors (877656800).

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

797869780 is a wasteful number, since it uses less digits than its factorization.

797869780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39893498 (or 39893496 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 61.

The square root of 797869780 is about 28246.5888205992. The cubic root of 797869780 is about 927.4930671786.

The spelling of 797869780 in words is "seven hundred ninety-seven million, eight hundred sixty-nine thousand, seven hundred eighty".