797857146 has 24 divisors (see below), whose sum is σ = 1730361204. Its totient is φ = 265695360.

The previous prime is 797857133. The next prime is 797857147. The reversal of 797857146 is 641758797.

It can be written as a sum of positive squares in 2 ways, for example, as 797441121 + 416025 = 28239^2 + 645^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 797857092 and 797857101.

It is not an unprimeable number, because it can be changed into a prime (797857147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1791 + ... + 39986.

Almost surely, 2^797857146 is an apocalyptic number.

797857146 is an abundant number, since it is smaller than the sum of its proper divisors (932504058).

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

797857146 is a wasteful number, since it uses less digits than its factorization.

797857146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42846 (or 42843 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The square root of 797857146 is about 28246.3651820902. The cubic root of 797857146 is about 927.4881716391.

The spelling of 797857146 in words is "seven hundred ninety-seven million, eight hundred fifty-seven thousand, one hundred forty-six".