861343000 has 64 divisors (see below), whose sum is σ = 2303496000. Its totient is φ = 295315200.

The previous prime is 861342991. The next prime is 861343027. The reversal of 861343000 is 343168.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54525 + ... + 68524.

It is an arithmetic number, because the mean of its divisors is an integer number (35992125).

Almost surely, 2^861343000 is an apocalyptic number.

It is an amenable number.

861343000 is an abundant number, since it is smaller than the sum of its proper divisors (1442153000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

861343000 is a wasteful number, since it uses less digits than its factorization.

861343000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123077 (or 123063 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 861343000 is about 29348.6456246281. The cubic root of 861343000 is about 951.4633035212.

Adding to 861343000 its reverse (343168), we get a palindrome (861686168).

The spelling of 861343000 in words is "eight hundred sixty-one million, three hundred forty-three thousand".