861070541 has 4 divisors (see below), whose sum is σ = 867850752. Its totient is φ = 854290332.

The previous prime is 861070517. The next prime is 861070589. The reversal of 861070541 is 145070168.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 861070541 - 2¹⁴ = 861054157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 861070498 and 861070507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861070501) 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, 3389915 + ... + 3390168.

It is an arithmetic number, because the mean of its divisors is an integer number (216962688).

Almost surely, 2^861070541 is an apocalyptic number.

It is an amenable number.

861070541 is a deficient number, since it is larger than the sum of its proper divisors (6780211).

861070541 is a wasteful number, since it uses less digits than its factorization.

861070541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6780210.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 861070541 is about 29344.0034930478. The cubic root of 861070541 is about 951.3629710255.

The spelling of 861070541 in words is "eight hundred sixty-one million, seventy thousand, five hundred forty-one".