861101197 has 8 divisors (see below), whose sum is σ = 945368352. Its totient is φ = 777831600.

The previous prime is 861101183. The next prime is 861101203. The reversal of 861101197 is 791101168.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 861101197 - 2⁷ = 861101069 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 (861101597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247579 + ... + 251032.

It is an arithmetic number, because the mean of its divisors is an integer number (118171044).

Almost surely, 2^861101197 is an apocalyptic number.

It is an amenable number.

861101197 is a deficient number, since it is larger than the sum of its proper divisors (84267155).

861101197 is a wasteful number, since it uses less digits than its factorization.

861101197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498779.

The product of its (nonzero) digits is 3024, while the sum is 34.

The square root of 861101197 is about 29344.5258438435. The cubic root of 861101197 is about 951.3742610943.

The spelling of 861101197 in words is "eight hundred sixty-one million, one hundred one thousand, one hundred ninety-seven".