609852197 has 4 divisors (see below), whose sum is σ = 619849836. Its totient is φ = 599854560.

The previous prime is 609852179. The next prime is 609852247. The reversal of 609852197 is 791258906.

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 74114881 + 535737316 = 8609^2 + 23146^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-609852197 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 (609852127) 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, 4998728 + ... + 4998849.

It is an arithmetic number, because the mean of its divisors is an integer number (154962459).

Almost surely, 2^609852197 is an apocalyptic number.

It is an amenable number.

609852197 is a deficient number, since it is larger than the sum of its proper divisors (9997639).

609852197 is an equidigital number, since it uses as much as digits as its factorization.

609852197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9997638.

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 609852197 is about 24695.1857049102. The cubic root of 609852197 is about 848.0241057027.

The spelling of 609852197 in words is "six hundred nine million, eight hundred fifty-two thousand, one hundred ninety-seven".