861354 has 40 divisors (see below), whose sum is σ = 2083620. Its totient is φ = 264384.

The previous prime is 861353. The next prime is 861361. The reversal of 861354 is 453168.

It can be written as a sum of positive squares in 2 ways, for example, as 859329 + 2025 = 927^2 + 45^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 861354.

It is not an unprimeable number, because it can be changed into a prime (861353) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1902 + ... + 2310.

2⁸⁶¹³⁵⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 861354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1041810).

861354 is an abundant number, since it is smaller than the sum of its proper divisors (1222266).

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

861354 is a wasteful number, since it uses less digits than its factorization.

861354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 427 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 861354 is about 928.0915903078. The cubic root of 861354 is about 95.1467353805.

The spelling of 861354 in words is "eight hundred sixty-one thousand, three hundred fifty-four".