861345573 has 8 divisors (see below), whose sum is σ = 1252866336. Its totient is φ = 522027600.

The previous prime is 861345557. The next prime is 861345619. The reversal of 861345573 is 375543168.

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

It is not a de Polignac number, because 861345573 - 2⁴ = 861345557 is a prime.

It is a super-2 number, since 2×861345573² = 1483832392253396658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861325573) 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, 13050658 + ... + 13050723.

It is an arithmetic number, because the mean of its divisors is an integer number (156608292).

Almost surely, 2^861345573 is an apocalyptic number.

It is an amenable number.

861345573 is a deficient number, since it is larger than the sum of its proper divisors (391520763).

861345573 is a wasteful number, since it uses less digits than its factorization.

861345573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26101395.

The product of its digits is 302400, while the sum is 42.

The square root of 861345573 is about 29348.6894596675. The cubic root of 861345573 is about 951.4642509226.

The spelling of 861345573 in words is "eight hundred sixty-one million, three hundred forty-five thousand, five hundred seventy-three".