861346197 has 32 divisors (see below), whose sum is σ = 1326259200. Its totient is φ = 551831616.

The previous prime is 861346193. The next prime is 861346219. The reversal of 861346197 is 791643168.

It is a happy number.

It is not a de Polignac number, because 861346197 - 2² = 861346193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861346193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172143 + ... + 177075.

It is an arithmetic number, because the mean of its divisors is an integer number (41445600).

Almost surely, 2^861346197 is an apocalyptic number.

861346197 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

861346197 is a deficient number, since it is larger than the sum of its proper divisors (464913003).

861346197 is a wasteful number, since it uses less digits than its factorization.

861346197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5194 (or 5188 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 861346197 is about 29348.7000904640. The cubic root of 861346197 is about 951.4644806846.

The spelling of 861346197 in words is "eight hundred sixty-one million, three hundred forty-six thousand, one hundred ninety-seven".