852666797 has 4 divisors (see below), whose sum is σ = 853870140. Its totient is φ = 851463456.

The previous prime is 852666769. The next prime is 852666803. The reversal of 852666797 is 797666258.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 331640521 + 521026276 = 18211^2 + 22826^2 .

It is a cyclic number.

It is not a de Polignac number, because 852666797 - 2¹⁴ = 852650413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (852656797) 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, 600608 + ... + 602025.

It is an arithmetic number, because the mean of its divisors is an integer number (213467535).

Almost surely, 2^852666797 is an apocalyptic number.

It is an amenable number.

852666797 is a deficient number, since it is larger than the sum of its proper divisors (1203343).

852666797 is a wasteful number, since it uses less digits than its factorization.

852666797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203342.

The product of its digits is 7620480, while the sum is 56.

The square root of 852666797 is about 29200.4588491345. The cubic root of 852666797 is about 948.2578586803.

The spelling of 852666797 in words is "eight hundred fifty-two million, six hundred sixty-six thousand, seven hundred ninety-seven".