861348241 has 4 divisors (see below), whose sum is σ = 927605812. Its totient is φ = 795090672.

The previous prime is 861348221. The next prime is 861348247. The reversal of 861348241 is 142843168.

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 540795025 + 320553216 = 23255^2 + 17904^2 .

It is a cyclic number.

It is not a de Polignac number, because 861348241 - 2¹¹ = 861346193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 861348241.

It is not an unprimeable number, because it can be changed into a prime (861348247) 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, 33128766 + ... + 33128791.

It is an arithmetic number, because the mean of its divisors is an integer number (231901453).

Almost surely, 2^861348241 is an apocalyptic number.

861348241 is the 16945-th hex number.

It is an amenable number.

861348241 is a deficient number, since it is larger than the sum of its proper divisors (66257571).

861348241 is a wasteful number, since it uses less digits than its factorization.

861348241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66257570.

The product of its digits is 36864, while the sum is 37.

The square root of 861348241 is about 29348.7349131100. The cubic root of 861348241 is about 951.4652333018.

The spelling of 861348241 in words is "eight hundred sixty-one million, three hundred forty-eight thousand, two hundred forty-one".